Pimple like bumps on upper inner thighs?

Im only 14 and overweight, but for about 2 years i've been getting these bumps that are kind of like bad pimples on my upper inner thighs. It started out with barely any and lately its been getting worse. I dont believe it would be any type of std because ive never had any type of sex. My mom says she gets them to but she doesnt know what it is ither. I've done some reading on the web too and none of it really gives me an answer. All i want is to get rid of them, or itleast not as bad. If anything were to ever happen between my current boyfriend and I it would feel really awkward. The situation is really uncomfortable and I'de just love to get rid of it. ): Thanks for the help