Ttc for a year no luck

Been ttc for over a year , I'm 27 boyfriend is 38 and we want a baby together so bad ! I have a daughter he has a son and we just want a baby to complete our family .. I had a mirena for 5 years and got it removed and had a period since the month after I got it out ! Still no baby ! I'm heart broken every month .. Please someone tell me what I should do ! Did I ruin my body with my mirena ! I'm afraid I'll never have another baby :-(