Hi My Name Is Keisha, I'm Want To Get Pregnant

Hi my name is Keisha, I'm want to get pregnant so bad but every time I tried it fail. I was told that taking oral contraceptive can help boost getting pregnant. I started taking minigynon 30 on the first day of my period but when I reached the 5 pill it was making me sick so I stopped. My period return on the 12 day, what would be the cause of that, is it something to worry about?