Err... I don't think that's a normal reaction to exercise, although my knowledge is not exhaustive. Might be something you'll want to bring up with your doctor, though.
Writer, mother, wife, and breadwinner. I love to run, but running doesn't love me, so I'm switching to my low-impact bike.
I'm not pregnant, just fat: My blog. fatnotpregnant.blogspot.com/
| current weight: 186.4