I once had to leave my dog for 2 months while I went to a new state to start a new job. I went up there with no place to live or anything because the job was so good that I knew a few months of hardship would pay off (and it did). But for that time, I left my dog with my mom. I was crying every night because I missed her so desperately. I can totally relate with how you are feeling.
You get 2 for the price of 1 now...your baby and your mom. How exciting!