It’s not baby related but need some advice please

I’m getting really fed up of my husbands family. They only seem to contact me when they want something. They don’t see my kids and it’s always me doing the contacting. They say yeah I’ll come over, then they don’t and don’t even tell me they are not coming. I just feel they are taking the mick and taking advantage of me. I’m currently pregnant and not one of them has asked how the pregnancy is going (had very complicated pregnancies in the past to which nearly lost my first) but then will get annoyed when they don’t get informed something. I don’t know if it’s hormones or what but I’m beginning to feel like they don’t care about me or my kids and they only want us when they want something. I’ve got a baby shower coming up and I’m in 2 minds whether to invite them. Can’t remember last time we saw them or spoke to them (my husband goes over to his mums occasionally but I’ve given up don’t see why I should do all the visiting when they never bother, we literally live 5 minutes away) . A little advice would be much appreciated please. It’s all beginning to affect my mood, currently supposed to be on bed rest as my pregnancy isn’t going very well and need baby to stay where she is (I’m 27 weeks) xxx