Going a little crazy

Hi I'm currently 13dpo,expecting AF in 24hrs. I have had very sore breasts since 1dpo (not unusual for me although this month was definitely mire intense) and have been getting irregular/random indigestion which is not usual for me. But I have had 2 negative tests and slight cramping today like af is coming (although I don't normally getting cramping until af has arrived!) this is our 7th month TTC. Driving myself a little crazy analysing every little detail. Could I still be pregnant????