Overtired, hormonal, and aggravated

La
So my baby is 1 month old, husband has gone back to work, and I am basically on my own  My husband travels for work so it's tough, he only gets a day and a half maybe two days of being home so since it is summer I have been trying to go wherever he is to spend time with him at least for a couple days a week. 
Being this is as his first Father's Day I wanted to make sure we got to spend it as a family and he was able to see his son. Well last night we went to dinner and I kept noticing him watch this waitress and I mean it was every single time she walked by. He would try to be nonchalant about it and sneaky but I could see every time she came around he would watch her. My husband has never been the type to check out other women, especially when I am in his presence. 
I am so irritated about this. Idk why.. I guess because he has always accused me of checking out other men whenever we go out in public places. I do not think that I check out any men. Yes I look at ppl when they walk by me, but why would I need to check out other men when I am married?! And to add insult to injury I see he's watching porn every night he is out of town. Before I could have given a rats ass if he watched porn but it has become an every night thing. 
Maybe I'm irritated because I am at home trying to keep everything together, exhausted and he is holed up in a hotel watching porn. Not to mention he recently made a comment to me about how when I check out other men it's "lusting" and the bible tells you not to lust, so I finally asked him isn't watching porn considered lusting also? All he could do was say yes. 
Forgive me if this rant is all over the place but I'm exhausted and overtired and my spots are sporadic. 
Am I overreacting and am I just hormonal? Or do I have something to worry about?