Convinced it was it but AF showed up 4 days late

Inheritance

Now I've always been a regular person never missed an AF or had a late AF unless I'm pregnant this past month AF ddnt show up until the forth day which was a strange one tried 3 tests week after week BFN , even went to see my Dr who confirmed I was not pregnant, strange enough I pee frequently, lost my epitite , am extremely moody and i cramp for few a hours a day...I'm annoyed with my body for taking so long to just conceive...