Does this always happen no matter where you are in your cycle? Is it just sit ups-- never any of form of exercise?

I guess I would check in with a doctor just to make sure. Exercise doesn't usually cause bleeding.

Good luck with getting your red belt!

I have been training in karate for 3 years now, and I have never had this happen until this month. This is the first time they have made us make a situp/pushup goal for the month like this. Normally, it would be just one day you came in to class and had to do your required amount for your belt in 2 mins. Which for me at red belt level is 70 situps and 50 pushups. So, I would struggle through and do it.

But now.. I have to get 2200 situps in 30 days... Which is about 70 a day... I never did them routinely like this before.

And it apparently happens whenever I do the situps now... no matter of where I am in my cycle... My cycle this month has come and gone and I am still having the spotting.

Today after my situps... I had what looked like a black period... Which is really weird.

I know I can't be pregnant... The vasectomy has worked for 8 yrs already.
I know I can't have an STD... We have been with each other exclusively forever.

I just don't see anything other than it happens in direct correlation with the situps. Weird.

Check in with your doctor just to make sure everything is ok.

I would say go to the doc just to make sure. You can call a nurse's hotline also to get a little more immediate info.

I really am into sit ups just to maintain my abs fit yet during my period I am hesitant of doing such 'coz I'm afraid this could harm me, or is this so? Anybody can help me please?