Odd cycle TTC

Kathleen
I had a period Mar 26th-Apr1st. Trying to conceive all April (sex every day-every couple days). Have 4 children, currently breastfeeding, always got pregnant right away but no positive test till 40 days after missed period. I've not had any symptoms and I was 2 weeks late on Sunday. Monday I started light and now it appears to be med flow period....thoughts?