Is something wrong?

I'm not able to visit a doctor until November 1st at least. But yes I plan on going then.

I missed my period for September. I'm 23 days late now. I took a test a day ago and it was negative.

I had sex on the day I was ovulating. September 9th. It was unprotected.

For two weeks I've been having brown spotting and clots (Not everyday). On and off. It'll start again then stop. It'll last for maybe an hour.

I've had no symptoms that I've noticed besides my lower back hurting a little and sometimes I feel like I'm still hungry, even if I ate an hour ago. I remember being dizzy once earlier this week.

My periods are regular and always come on time. A day or two late being the max.

I don't spot or anything before my periods start so the brown spotting is new to me.

I have one clear blue test left.

I would think it would say positive by now if I'm pregnant but I also know a lot of women have to take several tests.

I also know implantation bleeding would have happened by now, correct?

My period is supposed to start between the 20th and 24th.

I know when my period is about to start because my breast will slightly hurt and I'll get cramps.

I plan on going to the doctor once I can in November but I would also like advice and thoughts please.

Is it still possible that I am pregnant?

Or could something be wrong with me?