Really late ovulation?

Alright ladies I can't take it anymore. I MC Feb 15 around 6 weeks. Got AF back 6 weeks later. TTC last cycle but couldn't really pinpoint ovulation. Was due for AF somewhere the week of April 28th so figured I missed it (clue said 4/27 this said 5/2). But then 4/28 I had ovulation like cramping and CM so I did an LH test and it came back blazing but I've read before you get AF you get a surge. We BD anyway, just in case. Now my period is a week late but I keep getting BFN. I don't have any symptoms of anything. Is it possible I'm getting BFN because I'm still in the TWW or am I making myself crazy for nothing?? Has this happened to anyone before? I've had longer cycles in the past and last time I was prego I just had a weird off feeling and my boobs were killing me and that was 19DPO. Do I need to stop testing and give it another week to see what happens? Thank you!