Please help me

I was diagnosed with PCOS in April took Metformin got pregnant in may and had an ectopic pregnancy left tube removed im now trying to conceive after the loss my periods went from 77 days to 36 but now this month I’m on cycle day 42 and I’m scared it’s going to start being prolonged periods or could I be pregnant I ovulated pretty late cycle day 31 should my period have came yet ?