can I trust him?

So my boyfriend went on his brothers stag do this weekend. They obviously went to see strippers and I have no problem with that although he did spend a lot on lap dances. That annoyed me slightly as it's our sons birthday very soon and we could have used the money but anyway. What really worries me is he went to a brothel. He said he didn't know what it was and a friend asked him to go with him and once he got there he was mortified and just sat at the bar and waited for the friend. I sort of believe him and I have never had any worries or trust issues but I only had my daughter 3 weeks ago and we haven't had sex in months like at least 6 months so I can't get the nagging out of my mind. Help reassure me ladies