Help any advice is welcome

Christine • TTC first child. Fighting my battle with PCOS! I`m 30 years old and married. We`ve been trying for 6 years.
So I'm on cd63 and my last cycle was March 17-30. Lately for the last year to two years my cycles are light flow or spotting and go on for longer and longer. No one seems to have any concerns because I'm having cycles. But they are always long times between them. 
What I guess I'm trying to ask is how can I make myself have a regular cycle naturally?I'm not into medicine unless they are natural herbs or oils. 
I'm getting married in 17 days and would love to have a cycle before the wedding. I'm so fearful of getting it while in my dress. 
It's crazy it stresses me out more than anything else.