How to ask for help and how I feel most days

I just had my third baby 2 1/2 weeks ago. I had ppd with my first. I don't rem how I asked for help but I would like help now with my third. I do have great support from my husband but recently he went through something serious and dont want to burden him. I'd rather talk to my doc than go see a therapist. (Personal decision/not going to one)

I feel tons of guilt for many reasons, I feel more fruatrated most days, I feel like a bad mom for many reasons. Sometimes I sit and cry uncontrollably for different reasons or just because, I try my best not to be frustrated or let things get to me and it doesn't always work, I feel horrible that I have feelings of guilt, Idk how to handle these feelings.

I hope I'm not alone but feeling alone.

How do I ask my doctor for depression meds?