Trying for a baby

Me and my boyfriend will have been together 7 years this August and we have decided that we want to start trying for a baby. I have been on the pill for about 8 years and I stopped taking it 3 weeks ago, was due on 2 days ago but nothing has happened yet. Does anyone have any tips on supplements/vitamins I should be taking to help with conceiving and also any tips/advice would be hugely appreciated. Baby number 1 so I have no idea ❤️