What do I do

Me and my husband have been married less then a year and these last couple months have been extremely rough on us.

He’s in the army and he just came home on leave to meet his 2 1/2 month old daughter for the first time.

When we first started dating I told him I don’t like people who vape ( just personal preference) and he was already on his way to quitting before we were dating.

Well this morning I woke up and he was holding our daughter and a vape fell out of his pocket and when I tried to grab it he pushed my arm away and gave me a look..

I truly feel like my marriage is ending and I honestly don’t know what to do.