What Is Leg Pain That Feel Like Blood Clots?

You do NOT want to wait.  According to this website on blood clots you should RUN, not walk to the ER.
www.ahrq.gov 

You may have a blood clot if you see or feel:

New swelling in your arm or leg.

Skin redness.
Soreness or pain in your arm or leg.
A warm spot on your leg.
I do hope you check it out right away!  Let us know if you are ok!