Still late

I'm just curious what everyone thinks is going on. I'm now 12 days late, I took a test 5 days late and it was negative and haven't tried since. Yesterday I went out to eat and felt super sick after, I've had mild cramping for the last 2 weeks mostly just uncomfortable or gas. Super tired but have been waking up at 4 am on the dot and not able to fall back asleep. And I'm so bloated that sometimes I have to unbutton my jeans. Any advice will be helpful on what it could be!