31 weeks and still emotional...

Shannon • Second time mom. My first child is an 19 year old son and I just had a little girl on March 5th :)
Last night I asked my husband several times to repeat himself, partially because I am half deaf and partially because I am scatter brained here lately. Well he raised his voice, not quite yelling but louder than he normally would (any other time it would not have bothered me nor would I have thought anything of it other than he's talking loud enough to make sure I hear him) yet for some reason it triggered an emotional response from me. I quietly sat my plate down and walked to the bathroom and locked myself inside and proceeded to cry for like 10 minutes. I felt embarrassed for crying which is why I locked myself in the bathroom because I KNEW in the back of my mind he wasn't being mean yet I couldn't convince my emotions not to take it that way. I turned on the water and was hoping that he wouldn't hear me crying because my husband is the type where he can take my anger or frustration but it kills him if he makes me cry and I hate these emotions because I know he feels like he's walking on egg shells. Anyway, after about 10 minutes I opened the door and he's leaning against the door frame telling me that he didn't mean to raise his voice and he's sorry I got upset and he hugged me and said please don't be upset. I tried to explain to him that my rational isn't working and he didn't do anything wrong. Is anyone else STILL dealing with emotional overload this late in pregnancy? I never dealt with this with my son, I was just happy-go-lucky with him and with my daughter I am a blubbering mess. Please tell me I'm not alone.