Am I pregnant?

I am currently 21 days late.

I had taken a pregnancy test (3 at home) an went to the hospital to check if everything was okay since I had realized I was 2weeks late.

The dr urine test came out negative (they couldn’t do a blood test or ultrasound cause for some reason)

I was told by the dr to start taking prenatal vitamins just in case I am cause my levels of some sort mite be low.

Now I started spotting just a few days ago in the morning you’re normal red Then the next 2 or 3 days it was brown but like tiny blood clocks brown all while my urine coming out clear as light yellow. ( I only drink water an tea) but today around mid day it started light spotting red an a while ago still spotting but a little heavier. Anybody else go thru this? Please did you still end up pregnant? I have an appointment coming up.