Need advice!!!

Kelsey

I’m 18 days late! No sign at all of my period! Having lower abdominal pain like so bad it’s making me feel sick, my doctors have cut me off as I live to far so I need to re register with a new doctors could take forever to be seen, I’ve taken 2 tests when I was a week late and two tests yesterday they’re all negative, I’m so worried the longest I’m usually late is a week never this long and I just feel like there’s something up with me any advice? Or any similarities ?