Pregnant or dying? Please help.

No period in 76 days.

This past week or two I've had mild cramping.

I'm a fat ass and I have food aversions, which never ever happens.

Coffee and sometimes cigarettes also has made me vomit.

For two days I had a brown discharge with a tiny bit of pink, then back to brown and now I can't hardly see the brown when I wipe.

Never gotten headaches and I have gotten them bad lately.

I have been nauseous and very bloated. All the time.

Sleep. I've always only gotten 2-6 hours a sleep average and I'm a very light sleeper. I've been impossible to wake up lately. And sleeping 13-14 hours a day.

Boobs are sooooooooooooooooooooooo sensitive. Wearing a shirt hurts often. And laying on my tummy can often get painful.

Lower back pain makes it impossible sometimes to get out of bed or especially bend down.

I have always eaten real good and I haven't been able to eat right some days. But when I get my hands on something good it's almost like I never get full.

I haven't done anything different with my lifestyle.

I thought maybe this spotting could be implantation. But I'm not sure.

Unprotected sex Sept 8. And 20th. And also sometime beginning or middle August I think. And I can't remember before then. I don't really track it that well. I've always had regular periods. 4 days Max. And very heavy. I took a test sometime last August I believe and got a faint but very notivable positive. Tested twice more and got negatives. Then again and God what looked like a way lighter positive. Then a bunch of negatives. I thought maybe symptoms we're in my head but they're not. There's no way at this point. Had my thyroid tested a few months ago. Came back normal. I just need help. I am gonna go to the dr. But I just need some conversation and thoughts please.