Pregnant?? Or...🤷‍♀️

So I have still not received my period. I have three different apps that track my period. This app says 16 days late, P tracker lite says 9 days late, and Flo says 12 days late. I took a pregnancy test the 19th and it was negative.

Can someone help me out?

Previous period dates were:

June 16-21

July 12-16

September 5-8

October 4-6

December 8-12

January 10-14

From what it seems like, I’m irregular. I normally just track when it is and wait for the symptoms for it. Haven’t gotten much besides headaches, some light cramps, backache, acid reflex, and light breast soreness.