Postpartum depression help?

I had my baby 5 weeks ago and I suddenly don’t feel like I’m okay? I have an appointment tomorrow with my doctor. When I’m alone I just think about all the sad events that happened right before my pregnancy and some that happened after I had my baby girl. I have very little patience with both my kids and my husband. Sometimes when he or anyone else is talking to me I can’t focus on what they’re telling me for some reason, my head is just circling around all these events that happened during the lat few months. I’m not sure if it’s depression or baby blues or I don’t know. I just don’t feel mentally “ok” or mentally “here”