A Nurse Mom..

Quick vent.. advice is welcomed. So I am a nurse. I had my baby about 7weeks ago and started work yesterday. It was tough leaving him. I had been off work since 3weeks before baby and only worked one day a week 2months before that. I basically have been living off savings which has just about run out. i feel soooo guilty to having to leave him for 12hours of the day. As soon as I get home to him, i cry. I know i chose this profession but its hard right now and idk what to do..