Irregular cycles

I stopped taking my oral birth control the end of July. I had 3 months of regular cycles. Then I missed a period one month. Since then my cycles have been long but I haven’t missed any recently. I started taking mio -inositol and my period came on day 28 today. I was hoping to get a positive pregnsnt test as the strips said I did on cd16. Anyway, I think my long/irregular cycles are causing infertility at the moment. Along with my weight gain of about 50-60 pounds over the past few years while working full time and being a student. We have one daughter who is 7 and that is the only time I’ve been pregnant. I was healthy and 17. I am 25 now and facing these issues. I have not been to a obgyn to address these issues as I am waiting for the year mark to hit but I’m pretty sure I can make some changes on my own first. What would y’all recommend besides weight loss and stress reduction ? I had my labs done (CBC, thyroid, chemistries) and everything is unremarkable. My progesterone was low but idk where I was in my cycle at that point.