Ovulation confusion any advice?

Hubby and I have been ttc off and on for the last 2 years or so. I had a miscarriage last March and since then I have had regular periods which is awesome for me since i had always been irregular. I am on metformin for insulin resistance which is probably whats making me have a period and helping me to ovulate but im a little confused this month. I was averaging about 33 day cycles but this last period I was a few days late and calculated that im about a 35 day cycle. My LMP's for the last three months were: April 1st, May 3rd, June 9th. Im supposably to ovulate on June 30th but the past few days Ive had a lot of clear stretchy discharge. It seems real watery and its clear. Am I gonna ovulate sooner or is this normal before the actual O day? Any advice would be greatly appreciated.