Scared to share

I am 21 and me and my husband just recently got married, I had a IUD inserted when we got engaged. We have had unprotected sex due to not worrying about having babies. I went to my doctor today because I've been sick and not feeling well. Doctor went ahead and checked my IUD since it was time to check it and it was gone. Took a test and I'm pregnant, we put off having kids because we aren't really in a good financial place yet. I'm extremely happy as I have always wanted to be a mom but I can't help but be scared of how he might react.... what should I do?