Ladies I’m so confused!

I’m 16 ish days late for my period, I’ve been nauseated the past few days and a lot of smells make me gag and feel nauseated.

I’ve been craving certain things (mainly junk food).

I took a test and it was negative, did I just take it too early? I’m so confused. Sometimes I feel pregnant and other days I don’t.

I don’t go to my OB until the end of May.