Confused!

Shay

My husband and I have been trying to conceive. My last period was the 16th of October. I’m a few days late on my period, but have taken pregnancy tests and they’ve all be negative. I had one faint faint positive, but the rest after that one have been negative. Lately I’ve been super nauseous, frequent headaches, peeing like crazy and with tmi diarrhea.. I’m just curious as to if this has happened to anyone else and come to find out you’re actually really pregnant just super early? Am I testing too early, or am i in fact not pregnant? Please help!