What are early pregnancy symptoms?

Currently TTC

So I’m currently 15 days late. 44th cycle day. CM is white and creamy… keep in mind I do have irregular cycles. & I’ve taken multiple pregnancy tests but all of them are negative.

Am I just ovulating orrr??? I’m sooo freaking confused. Is this normal?

Also, my cervix is quite low. Maybe I’m finally about to start my period?