Missed one BC pill, late period, negative pregnancy test. Is it still possible I could be pregnant with a negative test?

Yes. It is possible to be pregnant with a negative test if you took the test too early. Pregnancy test can be negative for 4 to 6 weeks depending on the test kit you used. Be safe and stop meds until you have a test by a healthcare professional. The timing from your missed period is very important.
Missed BC. Hi, although missing one pill can increase the risk of pregnancy but if u have taken the rest as instructed the risk is small, missing 2 pills and more are a whole lot riskier, if that happens please try other methods of contraception like condom, I would think you should get ur period any time now, if not repeat the pregnancy test after a wk again. Good luck.