I've been suffering from what may be sinus migraines? not sure, but yesterday as I was washing my face, I felt pain as I rubbed my right temple. When I looked in the mirror, there was a popping vein which when touched, hurts. I used warm compresses this morning but it didn't help. If I rub it lightly to dissolve whatever's in there, the area gets sore around it as well as the bump hurting. I'm scared. Could it be a blood clot?