Yep, that was us too, not too long ago either. (Probably will happen again too, but at least it's not happening right now).
You could read my lightbulb moment a few weeks (days??) ago.
It totally sucks when every single conversation is tiring, exhausting, misunderstood, & frustrating.
This changes in time. The newness of the situation makes us feel this way as we are constantly on our toes looking for clues. Reading expressions, tones in their voice, body language, etc..... In time when we stop the "worrying"phase, it gets a whole lot better.
At some point in time you will get to a place where you no longer remember the last time you spoke. You no longer worry about what you say to them and second guess your every word. You no longer feel like conversation or interaction is a burden to either party.
It just takes time, they say it takes 1 month per year of marriage. For me this was accurate, at about 15 months it was not a problem anymore.