Fertility

I started on the contraceptive implant when I was 16, had this for three years then went into the contraceptive injection for the next 2 years. I stopped having periods throughout the injection. I then came off of this it took about 3 months for my periods to return. To which 3 months later I started taking the pill which I then took for 1 year. I've now been off contraception for nearly one year and been having regular sex but haven't fallen pregnant yet. I'm 25 and I'm worrying that I'm going to have problems conceiving because of the injection - I've read some stories it's taken people years and I'm desperate to have a baby with my partner. Every month I get my period in disappointed.