Late Period

Hi all I'm usually a 24 day cycle and my flo was expected on 04/01, I have took 2 tests and both negative. I'm not sure what's going on we have been TTC since Aug and my cycle changed from 28 days to 24 days in Oct.

I'm feeling a bit yucky and bloated but not usually bloated feeling, been having slight cramps since around 02/01 but they are on and off and having been having stitch pains on right side of stomach. Anyone experiencing same?