Postpartum depression

I've been crying everyday now. I'm 37 weeks going on 38 in a few days. I have so much going on... I'm moving to Ohio from Virginia with my fiance a few days after I give birth. I'm so worried. I'm leaving my 5 year old daughter with my mom and step dad, I've lost custody of her when I was barely of age I was a teen mom when I had her. She loves her Nana & pop pop, she loves me too but rather live with them. I've been living with my mom obviously up until 18 then I moved with my fiancé while he was living in VA at the time for a couple years. I was back and forth to see my daughter. She's in good hands, I know since my mom raised my sisters kids and even me and my sister. I'm going to miss my daughter so much and I'm going to try my best to come back every other month to see her. I'll be moving 8 hours away from her and I'll have her baby sister who she will not see often. I can't wait to get my daughter back. I don't have a job right now and I'm going to be starting online schooling in a few months. I'm 21 & my fiance is 39, he has two older great kids he's raised alone since babies and done a really good job. I'm so worried about leaving her behind and leaving my mom to move with him. I have no choice. I think about it everyday and cry because of my situation. I'm worried about traveling postpartum too.