Until a couple years ago, i was essentially in the same boat as you (and i was 10 years older then, than you are now)
It wasn't an issue with the bathroom, no... but there is no way in hell i'd ever let her know i wasn't feeling 100% unless i was nearly dying. There was no way i'd swear, or have a smoke around her. I was just "uncomfortable" about acting "as I am" as opposed to "as i was supposed to act, based on my upbringing"
I didn't change by choice, but wish that I did so ... and a lot earlier.
I hit the lowest I'd ever hit, and just didn't give a crap anymore. I stopped pretending because i didn't care... but it may well have been what saved me... at least a significant part of it... Because the stopping pretending lifted tons of weight off my shoulders.. and I learned then that I could stop pretending about a lot of other things too. and that lifted more weight from me. I didn't even know I had AS at the time... A counselor suggested I look into.. but what I read overplayed the stimming, and ... to be honest at that point I wasn't convinced of my social issues.... I had lost the ability to determine what I really was, and what I'd pretended myself into being.
Since accepting AS it's like a light has gone on in my mind, and I see things clearer, because I can now accept who I am myself, and it makes it soooo much easier to let go of the things I used to pretend to be that made me so miserable.
I honestly think if you let go of that issue, if you're able, that you might see that other issues you have can be overcome. You can be who you are, and proud of it. Maybe within a few years you and your mom laugh with each other about how "that one was a real rip-roarer, wasn't it!?!"