TTC after taking the pill

Ok so I was on the pill for about 3 months. I stopped taking it roughly the 18/19th of December and got my period about 10 days later. After that period myself and my partner wanted to TTC. What turned into a 28 day cycle has now turned into a 37 day cycle now that I've properly realised. I really want to fall pregnant and I'm still young so not in the danger zone. But I'm thinking it may be my weight? I have a BMI over 25 and weigh 120kgs. Can anyone help me out what it was like after taking the pill and pregnancy for them?