24/7 Emergency Care. Our patients are first.
If you have sudden swelling, pain, warmth, or redness in one leg or arm, or chest pain, shortness of breath, or coughing up blood, do not brush it off. A blood clot can turn dangerous quickly. Pulmonary embolism (PE) needs immediate medical attention.
Go to the ER right away if you have:
These are common warning signs of deep vein thrombosis (DVT), which needs prompt medical attention.
Call 911 right now if symptoms come with:
Those symptoms can point to a pulmonary embolism or stroke, which are medical emergencies.
What a blood clot is
Most people searching for “blood clot symptoms” are usually talking about venous blood clots: DVT, which often starts in a deep vein in the leg, pelvis, or sometimes the arm, and PE, which happens when part of that clot travels to the lungs. That is the main focus this page should have.
Just as important: a DVT itself does not cause a heart attack or stroke. Those are usually related to arterial clots, which are different. Many of the example pages mixed these conditions together too loosely. That is not good medical writing, and it confuses patients.
Why timing matters
A blood clot is dangerous because it may stay in place and block circulation, or it may break loose and travel, especially to the lungs. A PE can be life-threatening, and some people have a PE without obvious DVT symptoms first. Waiting for symptoms to become dramatic is not a safe plan.
ER or urgent care?
If you think it may be a blood clot, the ER is the safer choice — especially if you have one-sided limb swelling, chest pain, shortness of breath, fainting, or coughing up blood. Blood clot diagnosis often needs physician evaluation and special testing.
At Post Oak ER, patients can be evaluated with on-site imaging and lab services during the visit, which is exactly why an emergency setting makes sense for this symptom set.
What Post Oak ER can do for suspected blood clot symptoms
At Post Oak ER, evaluation for possible blood clot symptoms may include:
That is a much more accurate way to describe the service than promising every possible clot procedure on-site. A freestanding ER should describe evaluation, stabilization, emergency treatment, and transfer when needed — not overpromise hospital-based interventions it may not perform in-house.
Common risk factors for blood clots
Risk goes up with some of the following:
Not every patient with a clot has an obvious risk factor, but these are some of the major ones that make blood clots more likely.
What a blood clot can feel like
A blood clot in the arm or leg may feel like pain, soreness, heaviness, tightness, warmth, or visible swelling on one side. A clot in the lungs may feel more like trouble breathing, chest pain, coughing, or feeling faint. The exact symptoms depend on where the clot is.
A practical rule for patients
If a symptom feels new, one-sided, unexplained, or not normal for you, and especially if it involves leg swelling, chest pain, shortness of breath, or coughing blood, do not try to self-diagnose it at home. Get emergency care.
Whether you’re in Westchase, Midtown, or the Heights, getting to Post Oak ER is simple. We’re centrally located near major Houston routes like I‑610 and San Felipe — just a short drive from Memorial Park and River Oaks. Many patients reach us via Westheimer or Woodway Dr., depending on their neighborhood.
We accept most major insurance plans and also welcome self-pay patients with transparent, upfront pricing. Many Memorial-area patients visit us using Blue Cross, Aetna, Cigna, Humana, Molina, and United Healthcare.
Yes. We’re open 24 hours a day, 7 days a week. Our freestanding ER model is designed to minimize or eliminate wait times so you’re seen fast.
No. Walk in anytime. If it’s an emergency, come straight in or call ahead and we’ll be ready: 832-581-2277.
5018 San Felipe St, Houston, TX 77056 — near The Galleria/Uptown. Free, convenient parking right by the entrance.
Yes. Our board-certified emergency physicians care for all ages, including pediatric emergencies.
Chest pain, shortness of breath, severe headache/migraine, abdominal pain, injuries and fractures, cuts requiring stitches, high fever, dehydration, allergic reactions, asthma attacks, and more. If you believe it’s life-threatening, call 911.
Yes. We offer on-site CT scans, digital X-rays, and a full laboratory, so most tests and results are done during your visit.
Absolutely. We routinely see patients from Uptown, The Galleria, River Oaks, Tanglewood, and Memorial.
A photo ID, insurance card (if available), a list of medications/allergies, and any recent medical records you have.
We accept most major private insurance plans. Coverage varies by plan; our team will help verify benefits and discuss any out-of-pocket costs. Questions? Call 832-581-2277.
Urgent care handles minor illnesses/injuries. ERs have advanced imaging, lab, medications, and emergency physicians for time-sensitive or severe conditions (e.g., chest pain, severe abdominal pain, serious injury, difficulty breathing).
Yes. If inpatient care or surgery is required, we coordinate a direct transfer to the appropriate hospital.
Times vary by condition and testing, but our no-wait intake and on-site diagnostics help you get answers and treatment as quickly as possible.