Advice please!

So I’m currently 21 days late. My last period was the beginning of October. In October we stopped using protection. If we got pregnant, we got pregnant. If we didn’t, we didn’t. But I have taken 3 tests, all negative. Went to the doctor & he recommended that I take a urine test (came back negative). Soooo he then said if AF doesn’t come in 2 weeks to go back & they’ll do some more tests.

What do y’all think?

Within that 21 days I have had light spotting & a day of bloody discharge but nothing that needed a tampon.