So I'm a 22 year old transgender male. I am on 50 mg of testosterone weekly. I do smoke a pack a day, and I am also, even though I don't look it, 60 pounds overweight. This week I have started to notice that the back of my knee has swollen up and has turned red. It's is very sore to the touch, and it looks different today than it did yesterday. I don't recall hitting it on anything and I'm almost positive it's not a cyst. My endocrinologist told me to watch out for blood clots, but I don't want to waste a trip to the doctor of I can get a second opinion first. I have a picture of it. And also, my girlfriend noticed a big bruise like patch on my foot that doesn't hurt at all but it LOOKS like it hurts. I also have a picture of it. I just need some advice so I don't look dumb in the doctors office.