Help!!

This may be TMI to some:

So I am very regular. Every 28 days. Sometime 27 or 29 days. I'm on cycle day 29 and feel like af isn't coming. I had positive opk at CD 14. Around 6 DPO had cramping like i was ovulating. My husband did not ejaculate inside me and we had sex CD 13. Doesn't seem like i had a high chance of pregnancy. Ive been gassy for almost two weeks now and diarrhea. Also, we have steak often for dinner but i just couldn't eat it. Took one bite and wanted to throw it back up. So gave it to hubby who of course ate it in 2 mins lol. Tasted so disgusting. Is that normal around time AF is due?

Am i just late?

Just don't want to waste money on a test just yet.