OPK constantly positive?!

So I took an ovulation test on July 22 which came back a solid positive! We BD every single day. Took another OPK on the 29th and got another definite positive (with some negatives in the days prior). Been feeling questionable pregnancy symptoms but all PREGNANCY tests have been BFN. Took another OPK today with a HARD positive! I've always had very irregular periods until I was on BC which I recently quit in June. Please help! We're so confused.