Having trouble getting pregnant

Adriana
Hey everyone, for the past few months my lovely boyfriend and I have been trying for a baby. I've been told to have sex every day while ovulating, and I have had others tell me to have sex every other day. Still nothing. Last month I took a PT and it was positive, but turned out to be a false positive. I've been taking prenatal vitamins for months, but it just seems like nothing is working. It's so devastating. Can anyone help??