seperation

The past couple weeks (actually since we moved) Isaac has developed a serious case of separation anxiety. I noticed it Tuesday morning when i tried to leave him at my gyms day care... and there way no way. The minute I put him down, he started screaming. I didn't even leave the room and he was anticipating what was about to happen. I tried to leave twice, and there was no way. Then last night I had our babysitter Emily come over a couple hours before I had to leave for dinner, and Isaac screamed the entire time. As a mother, this tore me apart. What to do? Let him work through it, dont "abandon" him? I dont know the answer. I am workng through it too. I hope in the next little while, Isaac builds the confidence necessary to assert his independent self when Im not around. Hopefully, like all other things, this too is a stage that will pass.