i am seriously hampered by the fact i cannot see/examine you first hand. your description is just too vague for me to take blind guess but there are many skin disorders common in the groin area. one of the most common would be tinea cruris (jock itch). again this is not a diagnostic "guess" but just a consideration. you may need to see a dermatologist when the time is convenient.
i havent had sex since auguest cause but i have noticed these skin tone colored circle shaped bumps in the pubic area. some are in a cluster but most are off on their own. there are none on the shaft of my penis nor my thighs. just in the area of which pubic hair grows. they dont really itch unless im hot and sweating they dont hurt either. they are raised a little as well but other then that i dont know. my on board medical doesnt know what they are so im worried. only person i ever had unprotected sex with was my current wife cause we wanted a child.