Rehabbing a Hamstring/Glute Injury

I’m a 29 year old marine officer canidate (prior enlisted marine) and I’ve been doing alot of running, including interval training w/sprints, to get my run time down.

Anyway I have a tight right hamstring and I managed to “tweak” the glute/hamstring area pretty good last Monday by doing hard sprints two days in a row. My question is what is the best way to rehab it? I’ve already cut my scheduled run days down from 5-6 to 3-4 days a week with no consecuative “hard” days.

I’ve also had ART (excruciating a hell) Friday and I try to stretch it, but I’ve read that stretching too much can actually keep it form healing. It is so tight and painful and I really can’t afford to quit running entirely (I also hav e another timed run scheduled w/the marine corps on wed.) so any insight into the best way to rehab this thing would be greatly appreciated.