S/o family should I say

So since being pregnant things haven't gone the way we've planned s/o older sister can't come to the shower because she'll be at a concert so she wanted me to Change the date not something I could do since everything's been paid for the weekend she wants my mom will be out of town & she's throwing it plus I have family from out of town who would be coming. That's all been fixed now but S/O's father decided he wasn't coming because he feels I don't like him. I've never actually had a problem with him but there was this long time (2 1/2 year) incident of s/o dad infestation of bed bugs I refuse to ride in his car cause they were in his truck, refused to have him in my home cause they travel, refused to put myself in a situation where there was any chance of me getting them. We have had to bomb our home on numerous occasions due to this. S/o's mom who is not with S/O's dad had them because her other grand kids would visit & the bed bugs would travel home with them making her go into depression. It was so bad that s/o & his sisters would basically have to choose whether & spend time with him come holidays or have nothing to do with the mom. S/o's mom wouldn't visit us because she just knew his dad had been over and she didn't want to take a risk. Supposedly the problem is fixed now although I don't know cause I keep my distance. When s/o told me he wasn't coming to the shower i said to him that I was tired of the back & forth with his family & that I didn't care if he came. Am I wrong for feeling the way I feel? Am I wrong for wanting to keep myself away from his father because of the bed bug issue? & now that I'm 24wks Prego I really don't want to risk it I saw my nephews all bite up.