Advice on what I can do to help get pregnant or baby stick

Mary
We've been ttc for almost 1 year and I've had two early miscarriages (CP) what can I do to help fall pregnant and make a sticky baby! I know that might sound silly...I know you can't control miscarriages. I've been taking prenatals this month and I stay away from caffeine...I haven't went to a doctor yet bc they say to wait after a year of ttc with no success and the two chemical pregnancies I've had the doctors acted like it was no big deal! Advice on what I can do to help...