Has extreme anxiety caused my diarrhoea and nausea?

15m here, never had any gastro issues, posting this on this subreddit cos it might be linked to mental health.

Recently i fucked up, i dont feel comfortable saying what but it was a big mistake. I didn’t hurt anyone physically or mentally note that, but i let myself down and i get so afraid every time i think of it.

It comes and goes in waves. Im starting to relax watch a show or sleep or even wake up and boom! I get overwhelmed with possibilities of my mistake, maybe it could bite me in the back - anxiety attacks i think.

All my life evreyone around my has been oerfect, peers and teachers all - inwas in the smart class and never bellow. My parents are also my idols. Mabye im blowing it out of proportion but i feel like evrwyone will hate me if i open up. So inkeep shut.

Stool afterwards this tense anxiety liquidish also i get really nauseated. In my stomatch i feel pain. I know. Physical pain from just thoughts. There was aweek were i magically forgot and i has normal stool. Now the attacks or whatever are back.

Am i experiencing physical repercussions of mental issues? Also, if anyone can help, how do i get rid of this horrible anxiety.

Also inknow yall arn’t docters but i need another’s viewpoint lest i explode on thr inside.