I strained my ileopsoas muscle, for how long is it gonna hurt?

Till proper Tx: Proper treatment involves an accurate Dx. Have an exam. Then follow recommenations. Here's a bunch of info. They say the R.I.C.E.R. method will be good. Rest, ice, compression, elevation, referral. http://injuryfix.com/archives/iliopsoas-tendonitis.php See your doctor. Good luck!

A couple of weeks: Ileopsoas is a major muscle and takes a lot of pull to stretch it. By the same token, it takes a it longer for the damaged muscle fibers to heal. You should get a physical therapy referral soon to expedite the healing. Good luck. In the mean time, take anti inflammatory agents and warm soaks to help with discomfort.