HOW do I treat / heal pulled muscles?

I had been doing push-ups for years, and then lifting dumbbells whie lying on my back. Now, the muscles in my pelvic region, just above my p---- have felt strained for weeks and weeks. My pec muscles hurt like hell at night. is THERE ANY CURE FOR THIS? I CAN'T stop exercising or I'll get fat and that's OUT OF THE ?!