Ladies I need y'alls help

I struggle really bad with being insecure. About 2 years ago my husband started working at a prison. He works with tons of nurses as well as women officers. I didnt always used to be this insecure in the past but maybe because I feel threatened that he works with all these gorgeous women that i think hes going to eventually fall for one of them. I dont obviously tell him to stay away from them as he has to work with them but I do ask him to please always keep a professional relationship with them as I know sometimes boundaries can be crossed.

My husband is a very good looking man, well spoken, tall, works out and just looks really put together especially in his police uniform and although I'm aware he may not be everyone's cup of tea hes admitted himself that the nurses are flirtatious towards him. I know he's married to me and he loves me but it still in the back of my mind that one day hes going to cheat on me with one of them or even leave me for one of them. I dont know how to he more secure within myself. How do you ladies handle being so confident? I'm struggling.

sorry I should have mentioned that I have been in Therpy for about 9 months now.