I slept with a girl about 2 months ago. After doing so, my friend told me that she had slept numerous men. I did use a condom. After that evening, i noticed that there was a cut on my finger. I ignored it for a few months until today. 3 days ago, I woke up and noticed that my back was really itchy. I went to the washroom and my whole back was red and bump. It started spreading everywhere on my body. After a couple of hours, my whole body was covered with these red bumpy rash. I got scared so i went to my doctor and he prescribed me 3 50 mg of prednisone to take daily. I did what he told me and the rash did get better. On the second day of taking prednisone, I noticed that my skin was just really red. There was no inflation of the skin. After a few hours, my skin started to clear up and had no more red spots or any sort of rash on it. On the third day, I woke up to notice my body is filled with tiny red hives. Not as worse as before though. I also noticed that whenever i sleep, the rash comes back. I thought it was because of something i ate. I was at a BBQ and a wedding dinner before this happened. Please help :(