Missed periods & false pregnancy tests?

Hi everyone! I’ve missed my period in January and I’m late for my February period. I took my first pregnancy test when I was 20 days late but they have all been false since then. I am currently 37 days late and I have an appointment with my gynecologist in about a month ( the earliest I could make it) but I’m starting to worry & I’m not sure if I should go to planned parenthood to make sure I am not pregnant.

I couldn’t get it all in one picture but my November period started November 30th and over lapped into my December period. I didn’t give it much thought at the time.

Additional information: my cycle lengths are usually in the upper 30’s & my SO & I always use condoms.

Thoughts?