Constipation or pregnancy

Hi all! Ok so I talked to some girls earlier about being super gassy and constipated. Ok well my stomach is cramping and has been for a week or so.. my AF is due 10/23 and already one BFN. So now I’m starving like im starving every second of the day.. I take a bite of something and instantly am done. I feel full for a good 3 mins and starving again... like wtf is wrong with me!! Thoughts??

Ps not to mention I am now getting sick to my stomach when people talk about gross things.. aka someone telling me they got puked on today at work. I was legit gagging and that’s not me