Hi. Popping in if I may.
My anxiety isn't formally diagnosed. It's not as severe as some of yours. It's also primarily ASD-related (was diagnosed about a month ago). The assessor picked up on it, saying that I wasn't in a crisis sort of situation, but that it would be good to get intervention sooner rather than later to avert a crisis.
I don't really get physical symptoms as such; mainly when I'm in an anxiety-provoking situation I just shut down mentally. I had a panic attack about ten years ago when I was in year 7 (exam-related, they're not even serious exams in year 7 
) but none since then. My mother has had anxiety including panic attacks.
As can be expected from the ASD, my anxiety is primarily social, although I wouldn't say I had social anxiety disorder (I've read how people with it find it difficult to even go to the shops which I'm fine with). I hate social situations where I'm with people I don't know. For example, my friend invited me to a "meet-and-greet" event for a uni society. We were both final years at the time, she was involved in the committee and she encouraged me to come. Obviously I didn't know anyone. She's a real social butterfly (funny how that happens) and of course went off to talk to people, leaving me alone. Almost immediately I felt uncomfortable and was mentally planning how to make a swift exit without being noticed by her (I didn't want to face awkward questions). Similar situation in second year when she invited me to a pub night out where she knew everyone as she'd lived with them in halls the year before; they were all happily chatting away and I just felt like a spare part.
My friend is the kind of person who makes friends pretty much instantly, she had so many friends at university, whilst I literally only made two. I know it's more than none, but I would have liked to make more. There've been a few people over the years who I wanted to be friends with, but I just could not bring myself to do it. My negative voice would jump in going "oh, you'll have nothing in common", "you're too weird", "they wouldn't want to be friends with you". And now, of course, it's highly unlikely that I'll ever see them again, so I've blown it.
I'm really hoping to get some sort of counselling to try and sort things out. My anxiety and terrible self-esteem has meant that I have had no romantic relationships whatsoever. Absolutely nothing. Forget sex, I haven't even kissed anyone! I am still young (22) and have years yet (there are people twice my age who find someone and get married/have kids etc) but I have zero experience whereas those women will have some. I just find it hard to believe currently that I will find anyone even remotely soon. Obviously I know circumstances can change, I could easily be married with two kids in 10 years' time, but that just seems so far off right now. You see the advice all the time that you cannot expect anyone to love you if you don't love yourself (or words to that effect), so I'm definitely not going to jump into anything hoping it'll make me better. I just hope I can get a much better grip on myself and my self-esteem so that I feel ready to enter one.
Sorry for the long post. Hand holds to anyone who needs them 