Help?

Nicki • jw.org
Af showed up on the 24th very light compared to normal and ended on the 26 with spotting on the 27yh. My periods are usually at least medium in flow and last 5/6 days. What could cause this? I have been ttc. Idk what implantation bleeding looks like and not sure that's what it was. On the 22nd I got a bfp