EDIT: my period is 19days late as if 7/29

So the last week of June( the 25) I had unprotected sex .

I took two tests a few days before my period- around the 6th and another the day after I missed it , which was the 10th.

Two were negative and one was messed up . ( the control didn’t even appear)

So now about a month later I’m absolutely sick I And have been for nearly all of July. I’ve thrown up a few times the past month - I thought it was from the 4th of July food but that’s long gone - or I got a stomach bug

Myfriends and SO want me to test but I don’t see the point since I got the two negatives.

I’m adamant it’s a tummy bug of some sort .

What should I do ?