Prenatal pills???

Ka’zjah

So me and my boyfriend been wanting to have a baby. He has a ten year old daughter whose Bio Mother passed away when she was three and I don’t have any kids of my own. I’ve been wanting to take prenatal pills to better our chances because I have a irregular period and was told that I have a lower chance of getting pregnant, but he doesn’t want me taking them because he feels if it’s meant to happen it will happen. I don’t know what to think or do??? Any advice?