I was prescribed this medication for an infection and was able to...

I was prescribed this medication for an infection and was able to finish the entire prescription (10 days). I finished taking the last pill last night and have noticed red marks on my skin during the process. Today I have broken out in a full blown rash with red dots all over my legs. The rash doesn't itch but is ugly and seems to get worse in the heat. I hope it goes away soon. I think the one big clue to this medication is the fact that we need to avoid the sun. I thought it was pretty strange but , I followed the directions I was given and it still seems to have an affect on the skin--kind of scary if you ask me.