Has this happened to anyone before?

Morgan

I was cramping and had backache 8 days before my period so I took a test and it come back with a vvfl and so I waited for my period and it’s 4 days late and I’m getting negative tests but I’m cramping, backache, felt sick yesterday afternoon, I’m weeing loads and going for a poo more often than usual. My doctor said test on the 18th but has this happened to anyone and they have been pregnant?