46 days late & 4 negative pregnancy tests

Hi everyone! I’ve missed my January and February period. I took my first pregnancy test when I was 20 days late and they have all been false since then. I am currently 46 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 get a quicker response.

If I am pregnant is it possible that I’m too far a long that the pregnancy tests are no longer picking up the HCG in my urine?

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.

Red boxes are the dates when I have taken pregnancy tests and resulted in negatives.

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

Thoughts?