I guess you can get used to anything!
Michal mentioned getting pregnant after her worst mikvah experience and others had noticed a similar correlation.
Funny, for me it was the opposite... I tended to conceive after my most comfortable mikvah experiences. But then, for me, going to mikvah was always uncomfortable, since I needed to face the water.
Still, the years passed, and as I didn't spend them all pregnant, and didn't nurse clean for very long, there were multiple mikvah visits to get through. Every time I went, I dreaded it a little less, was a little more comfortable. One time the attendant even commented on it, on how much more comfortable I was than when I'd first started using that mikvah. But I still began each visit with an unfamiliar attendant by explaining my fear of the water and my heter for only one kosher tevilah, followed immediately by assuring her that I hadn't had to use the heter in a very long time. But I needed them to know, because each time I was to go under, there was a long pause as I gathered my courage, then pulled myself under by the handrail... and the last thing I needed was to feel rushed.
Oh, and I always face the mikvah attendant, because I need to know that someone is there if I don't come back up on my own. Again in a reversal of other's comments, it never occured to me to not face her!