28 and try for 3 months now

WonkaMonay
I'm 28 and my boy friend has been trying for 3 months now. And it hasn't happened yet and it starting to make me mad. I still have my period every month an some times 2 a month. He wants one this will b his first an my 4th. I started of with twins. An now I don't know what to do any more. We sex every two days, I cnt want to make sex a bad thing for us