HELP LADIES!!! PLEASE

So I’m officially 5 days for AF. I took a pregnancy test on Monday (four days ago) and got a BFN. I’m so confused because for the past at least three weeks I’ve been nauseous ALL DAY long and the only thing that prevents that is eating. I’m also extremely constipated (TMI sorry) increased need to pee and I’m exhausted to a whole other level! Also I’ve had the most amount of milky discharge I’ve EVER had and very mild cramping.

Little more info — I have hypothyroidism have since I was 12 always have had good levels. I also took two pregnancy tests on Monday (past 7PM) and (both first response and one digital) and the first one I took l thought I seen a faint line and so I took the next one maybe an hour after and got a BFN :( I’m unsure what to do but I’ve made a doctors appointment for Wednesday I just wanted to see what you ladies thought. Should I take another one in the morning when I’m supposed to, or just take this as a negative and hope for AF to come so I can try again.

TIA

P.s. Sorry don’t know how to put the TMI filter on!