Yep, this is a discussion to have in aftercare. Limits change as do preferences and other foibles. We are changeable creatures. This is why communication is a good thing. Make sure you always talk about your feelings afterwards, lay aside time for it specially. If you feel that either of you has problems with talking about some things, try keeping a journal that you pass to each other at regular points to read.

And I agree with the above - praise the good as much as you criticise the bad, if not more.