I have had 3 red circles on the inside of my thigh, up by my groin, for a 2 years now. it never itched so i never worried. should i be worried?

Skin lesions: You have had the lesions for two years, so there is likely no need for "worry" assuming that there has been no change in their size or character during that time. However, there are many things that could cause this and so going to the doctor for evaluation could result in your receiving treatment that could eliminate these circles. Go see your doctor.