I don't think i have any stds but i gave noticed with the type of work i do it i sweet a lot and i've noticed what looks like pimples in my pubic hair?

Normal: This sounds like "heat rash", very common. Try to shower a few times a day, and don't worry about it. Show your physician if you're concerned.

Rash from the heat?: If you sweat a lot, especially as a young adult, you will be prone to a rash from the heat. It will be located in areas that concentrate heat: pubic area, under arms, between thighs, for example. Each hair has an "oil gland" associated with it that, once plugged, can cause a pimple. Shower often, try to wear cooling, loose fit clothing and stay hydrated.