Which date is the best time of fertility?

[Rabbit]

Me and my husband were married for almost 4 years now but still we can't have a baby..

i'm just afraid to go to the doctor and check us both if there's something wrong..

my friends and relatives are telling us to have a baby now but i just told them that it's not time yet.. but in fact we really do need it now, specially my husband, i don't like to discover that i am the one who can't have a baby.. i don't want to hurt my husband's feelings.. i tried all possible way that i searched in the net just to be pregnant..

is there a certain pill to take just to be fertile?

im 24 and my husband is 29..

thanks in advance for the answers..