Welcome to SI,
20wrongs has a point about what you chose to do to your BW when you cheated. It's the unavoidable truth of being a WS. We all did it to our spouses/SO's.
What specifically are you feeling pressure from? Is it the continual questoons? Is it that your BW doesn't believe you? Is it that the only privacy you have right nkw is in the bathroom?
In general, once a WS comes clean with the entire truth and provides complete transparency, things get easier. Sort of. Really, if you have these feelings, it implies that maybe the whole truth isn't out. I say that not because I don't believe that you haven't told the whole truth, only that we see it here often that the WS says "That's all there is." only to let out a little detail later on. It's called trickle truth (TT).
So, maybe start working through some of the details in this thread and see what happens.
Have you reae the healing library yet? There's a link in the upper left hand corner of the screen. Lots of good info in there.