My 7yo son seemingly hates me and I don't know what to do.

For the past 2-3 months my 7yo has been behaving pretty oddly towards me. He's been speaking rudely to me. He'd pointedly ignore me if I try to talk to him (example I could ask him how school was and he'll Ignore me when before he'd go on for ages about everything). I take him to the park or for some kind of outing on Saturdays. He used to look forward to them but now he doesn't want to go with me. He wants to go with dad. He doesn't even want to go at all if I come along. It's extremely hurtful to me. I thought I just needed to spend more time with him so I even took some time off work last month but it just didn't help at all. I've tried to talk to him and find out whether he's stressed about anything or whether he's reacting to something but nothing. My husband has also tried.​The other day I asked him to get ready for school and he got moody. Later, I found a drawing of me with "fxking bitch" scrawled on it. I don't even know how he knows those words let alone to use them in context. He is supervised by either my husband or I (or his parents who watch him when we are at work) when he watched tv/youtube/netflix. The drawing was absolutely shocking and devastating for me. My husband has spoken to him about this too but it's still the same. He's going to take some time off work this month to stay home and try to sort out his behaviour.​Is he just going through a phase? Can't help but think this is karma for me not being able to love him for the first year of his life. I had PPD. I know that makes no sense but I think about it anyway. via /r/Parenting https://ift.tt/2ZYAM8H