Medication for PP

So I do suffer from postpartum depression and anxiety and Take medication for both but because I’m in medication my husband expects me to always be happy and if I ever get upset or anything he goes and says I thought the medication would be working, like I still have emotions and I hate he has to do this to me for everything he messes up sometimes and I just times get upset and some how he switches it on me and my mental health,I just hate this sometimes he tells me I’m not the same person when he met me but I had 3 kids in 4 years and that did change me and just because I’m on medication doesn’t mean I always have to be happy