Bleeding after Bowel Movement

Hi! I’m 6w6d with my rainbow baby and as expected constantly worried about spotting leading to bleeding/miscarriage. I’ve been spotting pretty regularly since implantation and my Ob says don’t worry unless it’s bright red and soaking through a pad etc. My HCG levels are promising and I have my first ultrasound on Wednesday. My concern is that every time I have a BM I bleed- not spot. It’s enough to fill the tissue and is bright enough to scare me. But after one wipe it’s done and no more red until the next BM. Maybe some brown or liiiiight pink in between.

Has anyone every experienced this & gone on to carry full term or experiencing it now with normal pregnancy? Thanks in advance 🙏🏽