In Need of Advice.

Kyra
Hello everyone, so I'm going to try and make this short and sweet.
I am 19, will be 20 before baby is born, and I'm 3+5 along.
I wasn't planning on telling my mom until 10 weeks, but I'm a horrible liar and my sister guessed it when I was talking to my mom.
They are both very happy, but I told my boyfriend that they know now and he is really upset.
I have no idea why and he won't talk to me.
We are in a long distance relationship, and I am moving down on July, but we talk constantly and I don't understand what is going on.
Any thoughts?