I need help please answer! Please!!

Ma

I am a regular 26-27 day cycle.

I am 18 DPO AUNT FLOW IS 12 days late

Negitive pregnancy test positive opk test.

Cramping/direah/headaches/mood swings/sore nipples.

NEGITIVE TEST!

POSITIVE OKP!

I got two faint positives then the next day negitive.

Cervix is high hard as a rock and NO CERVICAL MUCUS.

What is going on. Someone please help me. And no I can’t go to the dr untill I get a positive pregnancy test because of no insurance. Someone help me. Any others?