How much implantation bleeding?

If you've experienced implantation bleeding, please tell me how much you were bleeding and what your cramping was like. I think I may be experiencing this, but it doesn't seem to be quite in line with what I'm finding on google. Period is 6 days out, I'm lightly bleeding, but having strongish cramps. I'm 10dpo, NEVER gotten my period earlier than a day before expected, and this is significantly lighter bleeding. No clots, but I believe I saw a small piece of skin like tissue.

FRER tests are inconclusive. Possible faint positives, possible indent lines. Doctors urine test was negative. They drew blood today and want me back in a week. I'll continue to test daily.

I'm just trying to figure out why I'm bleeding, and what's happening. Implantation seems most likely to me, but I'm unsure.