I don't know if others have felt this way, but I have moments when I am annoyed with myself for planning this pregnancy. I am happy I am pregnant; I am more uncertain about having another child with my husband. I don't know if it's hormones, but more often than not, I really don't like my husband. He is a challenge to be around and when I make efforts to do my own thing, he becomes more clingy. I have no desire for any affection from him and just want him to leave me alone most of the time. 
We have a 5 year-old son and I do my best to keep things even keel and positive around him. My husband knows this and tries to provoke me for attention around my son. For example: just now, I was lying in my bed with my son watching an episode of a Doc McStuffins before bedtime and my husband comes barreling in, disrupting the moment. He lays on the bed next to us and says, "How ya doing, Mom?" And grabs my upper thigh. He knows I wouldn't like that and I said, "please don't touch me like that." He proceeded to call me nasty and walked out. I am then left with explaining this interaction to my son. I simply said "that wasn't kind-it's not kind to call people names." 
I have tried to explain to my husband that his behavior is unacceptable and he just doesn't get it or acts annoyed by my feeling this way. It's this same cycle the whole pregnancy. I try to spend less time with my husband and then he acts out like a child. Sigh.                 
                Me: 39
DH: 39
TTC: #3 - first cycle TTC - 10/2014
Preg #1 - PTL @ 23.5 weeks - angel in heaven (Addison Margaret)
Preg #2 - PTL @ 30.1 weeks - Kellen born @ 3 lbs. 5 oz in Jan 2010 - My Pride and Joy
 
        
Re: Regrets
Preg #1 - PTL @ 23.5 weeks - angel in heaven (Addison Margaret)
I went/am going through the same issues with my husband, who also is a bit immature when it comes to communication and disagreements that we have in general. But I also had to try to see things from his point of view, which can be hard, trying to step outside of my problems and how I am feeling in a given situation. I started to realize that the way I address issues with him wasn't always fair. I don't know if any of that relates to you, but I just think it can be hard for two people to meet in the middle of a problem sometimes.
I think a counselor or any trusted third party would be a big help to get a fresh perspective and new solutions.