My [35F] husband [37M] scared me.

I met my husband 12 years ago and have been married for 8 years. We have an 8 year old daughter and a 6 year old son. I got some flak for my parents for having 2 children instead of one (they believe that mothers shouldn't be having sex at all) but my friendships and my relationship with the rest of my family remains good.

Over the past year, my husband and I started to argue more. He would keep saying that I should quit my job as his income is enough but I do a good job balancing my job and my duties as a mother. Yesterday though was when my husband scared me with an out of character action.

He came home and demanded that I have sex with him as he was stressed. I was almost always happy to have sex but his attitude turned me off. He proceeded to grab my breasts anyway and had sex with me. I was paralyzed the whole time. He hasn't spoken to me today and I'm wondering how do I make it clear to him that what he did wasn't ok?