Caught him watching porn

So my husband and I have been married 10 months, and have a 7 month old girl. Our relationship has been rocky lately. Not enough time alone and more arguments. Well today after one of our arguments, I caught him in the shower watching porn.

Am I over reacting? If we had much of a sex life right now, I might not be so hurt. If he had talked to me about it, I might feel differently. But I feel lied to and insecure.

I can't even look at him right now 😭