Late period

Cassaundra

I’m now 15 days late. I had a few faint lines and recently nothing.. I have symptoms (sore breast, heightened smell, nausea, headaches and fatigue even some bloat ) but I still have negative tests. I have an ultrasound through planned parenthood next week. I’m just wondering if anyone has gone through anything similar? Ive also been having weird tinges in my stomach not painful just random.. gas maybe?