After intercourse

Becca • I`m 19 and ttc with my fiancé of 4 years :) just want our own little family
Before intercourse I have a pee so I don't need one after I usually do so I've decided to go before and then after intercourse I lie down for 20 mins and then put a pad on to catch any ejaculation, just wanted to no if it will help me get pregnant?been getting for a while now and sick of my BFN