I don't know if I have PPD?

I(26F) am scared that I am suffering from PPD and I am scared to tell my husband, the main reason for not telling him because he is also suffering from some kind of anxiety. We have 3 month old, soon 4 month, and he is really tough baby. My husband (26M) told me a month and a half ago that he has anxiety and that he thinks he has depression. He is scared that something will happen to our boy. He panick for everything, like what is this red spot on his skin(he has sensitive skin like me), or why is his upper lip bluish. He doesn’t know what to do with the baby when he is crying (screaming) and he starts to panick and wonders if something is wrong with him. (We are both nurses, and sometimes I think the bad side of it that our job makes us think all this crazy stuff, as we see a lot of bad things happen, a lot of deseases and we connect it with him). As for me, I am alone with him most of the time, I will be back at work after a year of giving birth, my husband got back at work at the beginning of january. The hardest time for me is in the morning when he wakes up (around 06:30 when he is already at work). I am very tired and wants to sleep a little bit more as he wakes up hungry every 2 hours to 1 and a half to feed at night, I put the crib next to my side so it easier for me to just put boob in his mouth and feed him. I think the tiredness is at fault in the morning, because in my head comes a thought to hit him, and I hate myself for that as he sees me the first thing in the morning and smiles at me. I then start crying because I can’t believe such thought came in my mind. Also, he screams a lot when it is time to sleep, he won’t even take the boob. Maybe I am forcing him to sleep. I looked myself in the mirror and see emotionless person, sometimes I just stare blankly and wish to just die. That is when my husband asks me if everything is okay and I just nod, as I don’t want him to worry on his job more, he panick when I don’t pick up phone immediately. (He can’t have his phone while working because he works in prison, so he uses one at job). Also, I hate that my house is a mess everyday, I clean it everyday when I get a chance, but it gets dirty again when he gets back from work. He doesn’t help with anything at the house, which pisses me off, I have to remind him to take the trash out, he always forgets. I tell myself daily that everything will be easier when the little one learns to sit as it will be less harder for me. The hardest thing for me is when I can’t calm him down, even in my hands and I start yelling. I see a lot of other babies on instagram and they say my baby just slept whole night without waking up, or you should sleep train your baby and the others says not to sleep train them…. I don’t know what to do.