Hi passenger; there are plenty of non-parents and plenty of men on MN, that's not a problem — but it's true that generally people will work on the assumption that most posters here are probably female, so if your sex is particularly relevant and important to your post, you may find it useful to mention it (although if it's not relevant, but you announce it anyway, you might get some gentle "Lo, a man is here to announce his manly opinion" teasing… it's not personal, just a result of people's annoyance at the occasional poster bringing up being male when it's not relevant and there haven't been any assumptions it's necessary to correct, and in a way that makes it look like he thinks it gives his opinion extra importance).
You might be better starting a new thread to discuss your experience, as this is quite an old one. But what I would say is that it sounds like Healthy Minds is your local primary care talking therapy service, and the GP was trying to suggest you self-refer to them.
Despite the wafty name, if they're the kind of service I think they are, they probably offer both group and individual talking therapy (often CBT-based, but sometimes also other modalities), guided self-help, individual counselling, and maybe things like mindfulness, psychoeducation groups, activity groups, or other types of help.
Why not give it a go? It might be better than you anticipate. Or it might not, but then at least you can go back to the GP and say you've tried that, what's next.