Hellllllp

I had a tubal reversal july 2015. Mc September 2015 and a mc june 2016. Af visited july 8th. August i was 4 days late and tested the 11th it was a squinter but like a grey evap line so i threw the 2 tests away. I started bleeding that night and bled for 2 maybe 3 days then nothing. Im like clock work i start the same day each month and it lasts 7 to 8 days! I was due to ovulate this week so i started doing my opks about 3 days before my fertile window and they have all been positive, 10 of them positive!!! I have felt kinda off and i knew i had a cheap dollar general test so i took it...to my surprise it was VERY positive! I made my husband go get alot more and they are all positive! On august 11th i bled heavy for like 3 days so wouldn't that put me getting pregnant in july as i should have ovulated this week and it would have been to soon for a positive test? That puts me at like 8 weeks!?! How did i bleed so heavy and still be pregnant? Any input is greatly appreciated