How to prevent ppd or anxiety???

I’m 23 weeks pregnant and have anxiety and have been feeling really down lately.

This is my second baby, I have a 5 year old and am now due in April.

I had lots of anxiety after my first was born and got on Prozac for a month or so after.

I’ve been really anxious this pregnancy all new anxieties. I am not taking anything but have been talking to a counselor and my fiancé.

But a huge fear I have is becoming super depressed or having so much anxiety after baby is born. Or even worse I read about post partum psychosis and now I’m terrified of that!!!

Any advice on how to get over these fears or prevent it from happening would be appreciated!?