I just dont get whats going on. I am very inshape and have been running 3-5 miles every other day for the past year training for the army. untill the past 3 days in a row I could barely walk back to my house it hurt sooooo bad. i have been doing a lot of research and most forums say cramps happen on the right side, not a whole lot on the left. but it does almost feel as though i tore a muscle. The thing thats really wierd is that I walk for .5 before i start actually jogging to warm up a little, then ill take what seems like 20 steps then my side feels like it was torn open by a foreign object and then i will streach and walk it out and as soon as my foot hits the pavement to jog, it stabs again but worse. sometimes it hurts so bad i cant catch my breathe. ive had MRI and CT scans and came up with nothing! ive also rested for months, soon as i start fittness the pain starts. really would love some help with this please,thank you.