I do appreciate the position you're in. I have PCOS as well, and insulin resistance.
First of all, while I wouldn't suggest disregarding your DH entirely, you have the final say when it comes to your personal health whether or not he agrees. He does have a point regarding side effects and the potential risks of medication.
Second, you may have to do the heavy lifting when it comes to self-advocacy with your GP and that means being ready for the conversations, which I absolutely appreciate can be very emotional.
If you haven't done so already, I'd recommend starting with requesting a complete metabolic panel including fasting glucose and the full thyroid hormone and antibody test. With PCOS, it is so very difficult to lose weight until you're on a level playing field and if you don't have the complete picture of where you're standing, you might still end up with a frustrating result.
After that, then speak to your GP about medications. And if you can, find a very good endocrinologist - that was crucial for me in dealing with all of the interlinked metabolic issues.
I've been on liraglutide for a long time, on and off since 2017. My word of warning is that it is perfectly possible to take it and remain overweight; unless you also address eating habits, it's not going to help and you're in a similar position to me with DCs that have appetites. It really isn't a magic solution to anything, but it does help if you are willing to also put in the work.
Everyone told me my PCOS and insulin resistance and thyroid issues would improve when I lost weight. Unfortunately they have not; I'm telling you this so you know that it's possible these conditions may not reverse once you've hit your goals. Whatever path you find through this, you may need to be prepared to follow some version of it forever, or at least keep monitoring it. I'd love to say my insulin resistance, hormone issues, and thyroid became normal once I hit 8st but the fact is that they didn't, and it's not likely they're going to.