I am not sure if anyone has experienced severe pains specifically...

I am not sure if anyone has experienced severe pains specifically after exercising. I seem to have many of the symptoms expressed on this site from mood swings, depression, extremely tired, headaches (which I never had a problem in the past) and cramps that come sporadically. I have been lucky to not get my period but I do get periodic discharges that are not consistent in the least. However, my biggest concern are the pains I get when I exercise. They have gotten bad enough that I feel that I may pass out and/or throw up. They don't occur when I am actually exercising, just immediately following and it lasts to various degrees for many hours.