Getting Pregnant

My boyfriend and I our trying for a baby. He’s older than me he’s almost 45. We’ve been trying for a baby since Sep/Oct of 2020. We have had sex everyday still till this day atleast 3/4 times a day off and on my period. And still no baby.😞

We’ve tried everything it feels like, different positions. We have sex on my period. Everyday of the month so I know that we can’t be missing when I ovulate.

Suggestions?