Is He Cheating🤫

I’m currently five days late and still getting negative test. My cervix is really high n closed. I had sex on the 23rd went to the bathroom thought it was my cycle but nothing. I’ve bin vomiting moody nausea eating a lot. N I usually don’t eat a lot because I just be in my bed. But now it’s like I have to eat something. Any advice?? Don’t be rude please! Any similar situations? How long did it take you to get your BFP??