Advice please!!

My little sister gets married April 23 of next year and I am in the wedding. We are trying to get pregnant. I am hoping it happens this month so I would have the baby a month before the wedding. If we don't get pregnant we will have to stop trying for a while. According to a <a href="">due date calculator</a> if we Tried in July I would be due April 3. Is that way too close to the wedding?