35 days late and negative!

Mary

So I am already 35 days late today and still geting a negative PT. I had ultrasound 2 weeks ago but the OB and sonogram just saw a thick endometrium. I have regular periods ever since. This is the only time and longest time I’ve been delayed. I had brown spotting last week and 1st week of August. Been ttc for baby #1. I am really freaking out what is happening to my body! I am turning constipated, having cramps (just mild, quick and random) and lately having gas. I think I am pregnant but.. there’s no proof!! I was not stressed out last months, What is this? Anybody on the same boat?