TMI? Never. I've heard it all, and HG affects all of the systems, and it does no good to avoid topics.
My dh passed out after a bm once, and his DR. told him that it sounded like his blood pressure had dropped after his uncomfortable BM. My dh has a history of Irratible Bowel.
Many times HGers feel much worse being verticle, rather than horizontal. Unless your BMs are a good consistency, BM's for HGers take patience and energy, both of which will make an HGer feel worse, including not being laying down in your comfy nausea reducing position. I hated having to get up to do anything, bathroom , bathing, brushing teeth, getting food, moving, going to bed, anything made me feel worse when I was in the 1st trimester.
Andy
Mom to Aaron 14 (HG), Anna 11 (HG), Adam 8 (adopted), Andrew 8 (adopted), fostering a newborn . . .