Is this just me?

My health visitor has suggested I've got PPD now at 16 weeks PP. I don't know if this is related or if it's normal/just me but holy shit the smallest things are irritating the crap out of me! It's mainly stuff my partner is saying. Now don't get me wrong he's great, and I know he's saying it all in jest but oh my God it's cutting like a knife at the moment! For example, I'm trying to make a bit more time for myself now my LO is 16 weeks so I've started trying to get back into a hobby of mine. My partner is constantly saying to our son 'oh your mum doesn't care about you anymore, she's got other priorities!' Or 'your mum can't pick you up at the moment because she's too busy doing things for herself' etc. Then this morning I had things I needed to do to get ready for us to go out for the day i.e making bottles up, packing changing bag etc. I was going to do this while my partner was getting himself ready. Cue the LO getting distressed because I've put him down to then be met with 'awe your mum doesn't love you enough to pick you back up even for a minute'. It's always little comments like that, that as I say, are made in jest, but are really starting to make me feel like I'm being a bad mum :/