My husband and I are TTC. I am using the CP & CM to chart phase of cycle, just recently had . on 8th of March til 16th,stopped then started again March 22 until March 30th.

Can ovulation occur twice in a cycle?

I was with my husband the 21st and22nd in the morning, according to charting I was supposed to have been fertile during the 20th - 23rd. Could I be PG tested got a BFN maybe it is too early?

Could breakthrough/implantation bleeding last that long and would it start right after I was with him? %-)