Hamstring strain or just soreness?

I've had minor hamstring problems which started around a year ago with a slight strain. I had physio and was diagnosed with a muscle weakness in the hamstrings(both)/lower back. Apart from occasionally feeling my hamstrings slightly when running, I haven't had any problems for months. Except I pulled up really sore from a soccer match last night (everywhere, but particularly hamstrings) and I was just wondering how you determine whether you have a strain or if it's just general soreness. It feels painful & vulnerable in both my hamstrings when I move my lower leg in either direction. Thanks!