Hi, I completed couch to 5k a few months ago and could run 5k without any aches or pains, then I had a break over August due to very hot weather. Now I have started running again, I keep getting a sharp, persistant pain/ache in my lower left abdomen. This pain only occurs when I run, even when I run very slowly. My stamina/breathing is still fine, it's just the abdominal pain stopping me.
What could this be? Has anyone else (especially women) experienced this?