Does anyone else feel uncomfortable when their SO has to be around female coworkers alone??

I recently have become jealous and nervous whenever he is around his female coworkers by himself. They are all within a year or two of his age. Before we got married, I was very confident in myself and couldve cared less about stuff like that, I thought it was extremely petty. But for the first time, I am feeling that way. I dont get mad at him, I get irritated with myself because I shouldn't be feeling that way. Ever since we got married, he doesnt want me to wear makeup really because of the expense, so I dont hardly wear makeup anymore because I am afraid to spend money on it. I dont get my nails done anymore. I feel overall ugly and disgusted with myself because i used to keep myself well manicured. I dont fee like a woman anymore. We have been having issues in our marraige recently. Lots of fights, insults, bashing families, etc. His family starts unnecessary drama with me, and I don't have issues with them except for that. He makes me feel like a loser for not finishing school yet, he makes remarks about it. I feel like my husband being around other women will make him look at me and think things like why did I marry that??? I'm just really down on myself right now and am in need of advice. I dont want to feel this way anymore and am disgusted at myself for being so insecure of other pretty women. I have talked to him about this and he just gets annoyed with me and thinks that I am looking to start a fight, and a fight is the last thing I want these days. Please keep your words kind 💖