No. Lol sex has nothing to do with delivery. You should however massage and stretch daily with oil to avoid perineal tearing.
Honestly sex has nothing to do with how you will deliver ha ha. You should be fine maybe try asking him or talking to him about it. Communication is the key to a successful relationship :)
It might be. I've heard that you should have sex around your due date to prevent tares. Or you could insert your fingers and message the cervix area with olive oil.