Could i still get a BFP with no symptoms?

I'd wait another week to take it and if its still negitive. If you unsure, go get blood work done at the hospital. You could be, i had cramping and thought i was getting my period and it never came. I ended up being 5 weeks along, and the cramping is your uterus growing. If your a week late, its pretty much a 50/50 chance.Good Luck.