"I started my period and lost all motivation to move. ;) That's just period stuff. Spent more time in bed & today is better. Do you think cuz of my period my BMs changed? Interesting."
I can only say that this certainly may be a reason. I get diarrhea with every 2 out of 3 periods (my pms symptoms tend to rotate) so, with your current changes, you may be experiencing something similar.
"gotta love this place for talking about our BMs."