Separation anxiety? idk what's happening!

My boyfriend and I have been living together for almost 8 months now..... everything is amazing. We're each others best friends, we wake up to each other, and I couldn't imagine being without him. Unfortunately we got the news he's have to move an hour and a half a way back home to tend to legal trouble (the amount of time, we have no clue. Minimum a month or two) ... now all of a sudden I feel like I'm falling apart, worried about him, worried about us and worried about myself. I'm started to feel really insecure, very anxious about him leaving and I'm crying all the time. Any ladies have hubbies or boyfriends that go away for a while? I've heard to surround yourself with other people but that makes me cry more knowing my best friend won't be around at the end of the day. 
I'm also worried about him thinking my insecurities are ridiculous.