...And your HbA1c is probably normal because you're low carbing. I see the problem. Mind you, most GP's don't know all that much about diabetes... And when I was told I had PCOS, all that was mentioned was that I'd have difficulty in the pregnancy department, which was a non-issue for me. At that point in time, if anyone'd bothered to check my HbA1c, it would've likely have been diabetic already. And since I didn't want a baby anyway, I didn't delve into the subject matter, as there were more pressing issues at the time. Basically we kind of tend to have to fend for ourselves here.
Best I can do: go from the assumption that you are resistant. Don't go off plan if you're uncomfortable with it, (An oral glucose tolerance test would only last a few hours, but would show your potential spike. Not a test GP's have heard about more often than not, though, but specialists might have). You could get in touch with an OB/GYN for further research, but since it also goes into endo territory, I'm not entirely sure what direction to point you in. But considering that you did see a spike of 11 while there were quite a few fats involved in that meal as well, which should slow down the uptake of carbs, flattening out the spike and lengthening the duration of it some... We can't diagnose, but I think if it'd been just carbs and no fats, you would've likely seen higher numbers. Which would have been consistent with IR. I'm just hazarding guesses, though.
At this point in time, would you do anything different from what you're doing now, if you had solid answers one way or the other? You're on the low carb high protein diet because of the weights, are you considering ditching that? Because that diet just happens to be quite excellent for someone with PCOS and/or insulin resistance, the more muscle mass you have the smaller the amount of IR, and so at least the diet is something you might want to consider keeping up even if you would stop your training regime tomorrow. (Also, no-one here's going to tut-tut over a carby meal; it's just information that helps us answer your questions, no worries.). PCOS doesn't get much treatment aside from Metformin, which I wasn't offered at the time, and relatively few of us are, so... Would it change anything for now? Would you want meds, change your diet, deviate from the status quo? You mention skin changes, which ones? Acne, skin tags, fungal issues? Getting tags cut off at the GP's might be an option, topical creams would get the others sorted most likely.... And maybe going even lower carb, if possible, would make other symptoms go away.
I may be saying too much again, but when it comes down to it... If there's PCOS, your hormones are likely to be a mess. Insulin is a hormone. Take care of yourself, especially if the medical professionals aren't.
Hugs,
Jo