Treating muscle strain in hip and groin area - another flare up?

Ok 2 years ago my strain was diagnosed.. well they never told me about RICE at the time just gave me pain killers and told me to take it easy.. then when the pain increased they sent me to physical therapy for 3 months.. then released me saying they couldnt do anything i was still in alot of pain but i took it easy.. and everything.. then last year i went back to work full time and honestly the same injury had been flaring up and down depending on my activities well when i went back to work it got worse to the point where i collasped at work and was fired.. well i contacted the dr i was sent to before and he said it was something else.. but i still believe since i had still had problems with the old one it was the same problem.. What i am asking is.. Can it be possible.. For a Strain to be agravated again.. I was told no but.. since.. i've been going through this.. i think it is.