Hello ? I don't know what's happening, three weeks ago my foot got sic…

Hello ? I don't know what's happening, three weeks ago my foot got sick, like a vein being stretched under my fingers and suddenly as if a rubber band shoots and sharply, then in the elevator it started hurting like a bruise in one place, and not a big swelling, like my legs were finding, but I didn't hit them, didn't bend them, at all, went to the post office and came home and just simply started hurting, in the end I went to the doctor, he prescribed two ointments and I've been applying them for 3 weeks and everything to one spot, here for two days now I wake up at night or during the day and my legs hurt from the knees to the