New and seeking advice

Hi everybody

I've recently started to suspect that I'm autistic. The more traits I've read about, the more I've gone, 'oh hey, I've got that'. My stimming, tics, avoiding social situations, great memory for useless facts (but terrible memory for important things), love of stats. It all seems to line up.

I did that AQ50 test and got 33. I've looked at getting an official diagnosis, but I've been told it will take about a year, but I'm only in the UK for about another 14 months, so may get part way through and have to leave anyway.

Does anybody have any advice on how quick it is once you're off the waiting list, or should I just wait until I get home and join the waiting list there?

Also, is there a way to get a preliminary result quicker? Or if anybody would be willing to offer their opinion. I don't want to waste the doctor's time (and people's in this forum) if it turns out I'm just over-thinking things.

Thanks in advance for any advice!