I had sex on 6/26 and detected a LH surge on 6/29.. What are the chances of me getting pregnant?

I have PCOS and have been trying to conceive for a few years.. This year we have really been trying since I am in my 30's. My periods are irregular because of the PCOS so my cycle length varies from month to month. I took Beyaz for 3 months then doctor took me off them the first of June I still take Metformin 500mg 2x a day. I used a OPK the last two weeks and on 6/29 it detected a LH surge, I had sex on 6/26. I was curious to know what are my chances of getting pregnant. My husband works offshore so having sex daily or even weekly is not a option.