I'm trying 2 get pregnant, dark brown spotting 2 days in aug, 3 weeks late for sept, negative hpt, could I still be pregnant

There are a few things I need to know before we can go further.

How old are you? How long have you been trying? Have you ever used any kind of birth control? If you have what kind was it? How long ago did you stop using B/C if you ever used it? When exactly was your last period.

I need to know this just to try and analyze the situation before I can give you any real kind of help.

I'm 29, I've been trying for the past year, I used birth control so long ago, I stopped after I graduated high school with b.c.I used the pills, I forget what kind, mu actual last period was July 5th, I spotted for 2 days in August 10,11, I've had cramping but no period in August or for September, hpt are all negative, some nausea,I've been stressed before and still had a period, I'm not under any more stress than before so that can't be it, please direct me, my husband says that I'm pregnant and I kind of believe so to