He's gone...

I'm currently 11 weeks and 4 days pregnant. The father of my child has been staying out until 3 am every day this week, (we were engaged.) I come home from work last night to find all of his stuff packed and gone, along with him. No notice at all! He left me a note with our rings around it (I don't wear mine to work as I work as a CNA/CMA). Said he was no longer happy. Said if he was no longer happy then I wasn't happy. All this because I got upset that he wasn't home with me at all. Said in his note he didn't leave me for another "random bitch," but the fact that I never even accused him of that makes me suspicious. I'm still trying to wrap my head around the fact that my relationship is over, and I'm going to be raising this baby alone...