PSA TO ALL WOMEN PLEASE HELP

I am 17 days late on period. I have NEVER missed nor been late!!!! I’m 19. My breast have been tender today and yesterday was having weird abdominal cramps and some cramps in my ovaries. 70% of the ovarie cramping is in my left one. I’ve never experienced these types of cramps. But they weirder thing is I have taken like 4 at home test allllll a bfn (negative) but Idk I just have a weird feeling!!!! Ughhhhh like I have a doctors appointment for a blood test. What do you guys think