I have just literally stumbled onto this thread, and while I have not read it all, I have gone through the first page, and seen a few other posts along the way.
I have two young sons, both ASD. My elder son was diagnosed with Aspergers before it was included as part of the spectrum. My younger son is mildly autistic. We have been most fortunate in that the mainstream school they attend have been most supportive of the boys and their conditions, and have come up with some truly brilliant ways of incorporating their respective coping mechanisms in a safe and ultimately constructive way. They are both incredibly bright, intelligent lads with ways and means of seeing ways around blocks in problems that makes me jealous at times.
I have seen how much of a challenge some things are for them, particular changed expectations, or in routines. Of course, there are many other things that are challenges for them, but I wont bore people with the nitty gritty details. But Dashenka, what you have spoken off is common with my boys, and a couple of other Autistic people I know.
Please, don't be alarmed about how things seem to be getting worse. Now you're aware of your condition, you are more aware of how it is manifesting, as well as being more concerned about how the symptoms are. But you know what it is, and that gives you the means to discover more about YOUR condition, and find ways to improve your quality of life. Tap into the strengths you have, and if possible, find ways of turning what you think of as negatives, or unwanted behaviours, into strengths.
Lastly, everyone is different. Everyone has a different view of the world, and some people interact with in a different way. You, like my sons, have an advantage that most others don't; you have a better idea of how your mind works, which gives you a leg up on those who don't. Use that wisdom wisely.