Summarize the following:
Make an appointment with your doctor as soon as possible. Provide your doctor with a list of your symptoms, as well as your risk factors for blood clots. Your doctor will want to examine you and perform diagnostic tests to confirm if you have a blood clot. If you have serious symptoms such as extreme pain, swelling, or weakness or trouble breathing, you should call emergency services immediately. Your doctor will place the ultrasound wand over the area where a blood clot is suspected. The sound waves from the wand will travel through your body and may provide an image of the clot.  Your doctor may do several ultrasounds over a few days to see if the clot is growing. CT or MRI scans can also provide an image of the clot.  The most common area for a DVT is your calves, so get any pain in that area evaluated immediately. D dimer is a protein that can be left in your blood after you've had a blood clot. High levels of D dimer mean that you likely have a blood clot or one that's recently dissolved. Based on the results of your D dimer blood test, your doctor can determine if the symptoms you're experiencing are caused by a blood clot. Your doctor will inject a contrast solution into your veins, which will mix with your blood and highlight any clots. Your doctor will then take X-rays of the area where the suspected clot is located.

Summary:
Consult your doctor immediately if you are experiencing symptoms. Get an ultrasound to check for clots. Undergo a blood test to find out if you have high levels of D dimer. Consent to a venography test.