Fear of the unseen

A newly wed couple (jessica and mathew) have everything they could ask for, but they feel like something is missing from their perfect life. They realize one day that the one thing missing is a family. They want to try to expand their family by bringing a child into their life. After years of trying they start to give up on the dream of having a child. They seek medical help but doctors cant help them. On the verge of giving up completely they meet a strange man that says that he can help, but he needs something in return. He helped them and immediately Jessica announced she was pregnant , so for a while they forgot about the strange man. Two months into the pregnancy they realized this wasnt a regular pregnancy.....