ugh 😑

Okay so I just had my daughter 7weeks ago.  my SO sister and her husband decided to come down for a weekend with their two little girls. I didn't think much about it thought it would be nice to have some extra help and hang out with adults. However this entire weekend has sucked it seems like it's more work for me cleaning up after their girls they don't help around the house at all Nor do they offer. Idk if it's just me bein hormonal but I'm annoyed. We had to go special shopping for them and have paid for everything since they got here dinner lunch breakfast! I feel like they should be more helpful or at least offer to help instead I am cleaning up after everyone! During the day it's all about them we were all suppose to go to the park but for some reason they were in a rush and couldn't wait for me to feed my daughter so they left in our truck!!! Of course my partner saw no problem with this and said it was fine!  I wouldn't mind so much if they would offer to help or move off my reclining couch so I can sit down comfortably with my daughter or help a tiny bit at least help with dishes and pick up after their kids.  I didn't expect this. We just had a newborn we need to relax if I had known this was gonna happen I wouldn't have them here till my daughter was older and I was less hormonal and exhausted. It doesn't help when I try to talk to my partner about this he makes me feel so bad and ends up saying something to me to make me feel like I'm being ridiculous like they are family sorry but it's part of being with him. And that after this weekend we will never have them back! Makes me feel like I'm an asshole which maybe I am but last I check I JUST HAD A FREAKING BABY I SHOULDNT BE THE ONE UP CLEANING AFTER THEM! Do you think it is wrong of me to feel this way?