On day 40 of cycle - bfn and no AF -?

Ugh - have a 32/33 day cycle and always regular. Had a miscarriage in July, started acupuncture earlier this month. Pretty soon after first treatment, started sorting which has been on going now for 2 weeks. Took two hPts - both negative. 
Since I'm only a week late, can't rule out anything.
My questions:
Anyone have spotting after acupuncture?
Can I even be hopeful of a pregnancy given the spotting?
Anyone experience this?
Advice?