Postnatal depression?

Hi ladies. My son turned one last week. I had very bad postnatal depression until he was 8 months old. We had moved to a new city, I had no support system, hubby worked crazy hours (30 hour shifts), our financial situation turned very bad unexpectedly, I couldn't find a job and baby had colic, reflux, problems breastfeeding and is a very poor sleeper. I was hopeless, desperate, frustrated, overwhelmed, angry, suicidal and often wanted to smother my child to put him out of his misery cause I didn't know how to fix his pain and stop him crying. It was awful. I didn't want to go on meds (stubborn fool that I am) but I did go for therapy after 8 months until recently. It helped a lot but I had to stop cause our medical insurance was too low. Now for the past 2 weeks I've been so irritable with my boy and the slightest thing makes me so angry with him. He fights sleep and scratches my face and I get so filled with rage that I feel like smacking him hard. Please note I will not hurt my baby ever, even if I feel like I want to. I don't know if this is the PND returning or if it's something else. I don't take the pill anymore due to severe migraines and just use condoms as BC. since my son was born, I suddenly get very bad pms which I've never experienced before. Very angry and irritable. I don't have PMS now so I don't know if this is PND or a hormone imbalance. I don't feel suicidal, helpless, etc anymore. Just irritable, angry and frustrated. Anyone have the same experience and any advice? I plan on seeing the doc next week. Thanks