Need opinions!

So AF was supposed to start FOUR days ago. Which I wasn’t super concerned because my periods tend to be irregular at times. But for at least 6 months it had been regular. I took 3 cheapie pregnancy tests 3 days before the day AF was supposed to arrive. Just around the time it was supposed to come I got really nauseous and just fatigued. Right now I feel the way I feel when I’m on my period... w/o the blood... I haven’t been throwing up. But it’s constantly there. Right before I made this post I barely had time to hit the bathroom because of diarrhea.. I had no warning. And the longer I held it in while I was booking it to the bathroom the nausea got worse and I thought “oh boy, here comes the puking”.

I’ve gotten my hopes up many times thinking I was pregnant.. but I also know that I probably take another test so I don’t do anything to harm the baby. I know the flu is hitting hard everywhere but I didn’t know if that could even be the flu... ahhh. What do y’all think? Am I going crazy? Lol!