The fact that you have pain when pulling your toes up is disconcerting. This is called Homan's sign.
Risk factors for a blood clot include:
-Sedentary lifestyle
-Recent air travel
-Smoking
-Birth control pills
-Pregnancy and recent childbirth
-Genetic disorders that increase your chances of blood clots
-Recent surgery
-Cancer
Signs and symptoms include:
-Positive Homan's sign
-Red spot on your calf
-Cramping
-One leg significantly larger than the other (a difference of ~1-2 cm may be normal; more than that would be cause for concern)
If you suspect it is a blood clot you should DEFINITELY go and see your provider RIGHT AWAY. If you get short of breath or have chest pain, CALL AN AMBULANCE. It's possible a piece of the clot could break off and go to your lung.
Usual practice (at least IME) is to put you on a heparin (blood thinner) drip and then send you for a scan. A scan is usually the best way to find if there is a clot. You should be aware that blood thinners can cause bleeding. Bleeding gums are a common problem, but if you notice blood in your urine, poop, or vomit, make sure you let your provider know immediately.
I second the idea of rivaroxaban if your provider is willing. The advantages are that it takes less time to be effective than warfarin and the effect on clotting is more predictable. (Each dose of warfarin takes about 3 days to be effective, and the dose is HIGHLY variable. I have had patients who took one dose on certain days a week and a DIFFERENT dose on other days - even after their dose was stabilized!) The one disadvantage is that the action of rivaroxaban is not reversible, so if you did have a severe bleeding episode (rare) treatment would be supportive only. It could also be quite expensive.
This is the opinion of the author only and is NOT a substitute for professional medical advice. In a similar case, consult your primary provider.