I want a baby 👶🏾

Me and my fiancé are ready to have our 1st baby,...we've been trying for a couple months now but still nothing ...I've been tracking my ovulation. Every month ...I just started taking these first response reproductive Health vitamins to maybe help the process a lil more...I've talk to my close friends & they're all saying the same thing have sex right before you end your menstrual 🤔😕your more fertile during this time....my menstral is a good 4days long & then I'm done I should still be able to reproduce within that month...I just need advice & help 😩😩 I want a baby bad baby fever is strong