No period since September!!! what's happening?!?

Sy
 My last period started September 16th ended September 22 and I haven't had one since. My periods are usually pretty reagular. Maybe 3-4 days off. I am sexually active, we don't use protection and he finishes inside of me. (TTC bby#2) I've taken tests and they all come back negative. Increased cm, have had cramping in my back and my lower abdomen, Brest soreness, increases appetite, and my sense of smell is more intense. Keep in mind I already have a child so I am aware these are pregnancy symptoms but all tests are negative. I'm just not sure what to think of it or what to do. Should I make a Drs app?? Or keep waiting it out??  My son is 10 months old, so maybe my period is just all whackey from my pregnancy?? But it was normal before September... ugh so confused! Any advise would be helpful! Thank you in advance! 
This was the last test I took. ( 14 days ago) clearly negative. I haven't taken one since. I've been waiting to see if anything happens.