Dumped at 12 weeks pregnant

Me & my bf have been planning a baby , I had to go away for 7 months , he moved in with another girl but as soon. As I got home he left her to come back to me , we just recently broke up & the next day he moved in with her , she paid his phone bill & bought him drugs . idk how to feel , he doesnt even contact me , he blocked me on fb & I didn't do anything to him . advice