Help!

Shantel
So I am 5 days late today. No AF in sight! Went to the doctor today and got bfn. Never been late in all my years unless I was pregnant. Breast really tender especially when I walk, lots of creamy white  discharge, very gasy and stomach cramps similar to AF. Dr said take another test in a week. Has this happened to anyone else before and you got a bfp after another week?