Post partum anxiety

Anyone dealing with it? Prior to pregnancy I had anxiety but nothing I couldn't manage with a hot bath and meditating. Now however I am struggling. I think what is triggering my worry is the fact I go back to work this month. I am afraid that something bad will happen to her because I won't be with her. That she will fall asleep in her crib and not wake up. That she will cry and won't be able to be soothed. That she won't want to breast feed anymore after she starts taking a bottle. That she won't love me because I won't be there. She will be with my mom and mother in law during my work days, both of whom I know are more than capable. I just worry. Spoke with obgyn about it and she offered medication, however I just can't get myself to fill the script. This is my first baby. I am a nurse. I know medicine isn't bad and I know most of not all of my worries are irrational, but it's hard for me to tune those thoughts out and even harder to take a pill to manage. Just wondering if anyone elese delt with or is dealing with this, how long it lasted and what helped make it better.