Help please

I took a pregnancy test the other day and it showers a vvfl and other seen it too. Then i took another one this morning and it was nothing. So i decided to go get some bloodwork done and it came back negative as well.

Tbh I’m not sure when i will ovulate again. If i already have or i still haven’t because i just stopped using the depo shot 5 months ago(last injection) i got my first period last month. Lighter than normal and lasting longer but very consistent didnt stop and come back. Kinda like consistent spotting with a few good flows.

Well anyway i have had sex at all different times this month and this past Friday July 19th. I had weird sharp cramps for about five hours then think white discharge that now very watery discharge sometimes drenching my underwear( sorry tmi )

My question is could i have possibly have taken the blood test to soon since i could of ovulated anytime or i just did or am about to due to cramps and discharge. I even got a very close positive on an ovulation test three times today but i also had one very close on Friday.

Any advice on what could be going on.