Help?!

Char
Hi, I am now 9days late for AF. Had a bit of spotting Sunday/Monday but only very light. I have a few symptoms that can all be put town to something other than pregnancy.. Cramps, Bloating(more than usual), back ache and sore boobs (I get thesebefore AF) and tiredness. I keep burping (that's the strange one!) and kinda ache under my ribs...
Thing is all HPT's are negative... Haven't tested since Wednesday. How long would you leave it to test again? Has this happened to anyone else and got AF really late or a BFP
This may sound stupid but I feel different but can't explain it. I'm just wandering if it's all in my head or I could be pregnant?! 
If you could help that would be lovely!! 
TIA ✨