Trying to Get Pregnant Tips Please

I am 19 years old and my husband is 25. I have been trying for a baby for about a year now I have lost my twins and lost my single I got pregnant 3 weeks after my first D&C (doctors said it was ok) lost that baby at 6 weeks both I found out in an ultra sound went to another doctor and said wait 2 or 3 months it's been 4 or 5 months still not pregnant. I have never wanted anything more then a beautiful baby in my arms and my husband also. I know I'm young but I don't want to go through loosing another baby I don't drink I don't smoke I own my own home I have a bedroom for my baby. Any suggestions on getting pregnant quicker?

Thanks,

Sage