I had the same thing after my last dive. Sea’s were mild @ 2-4ft, and we dove to about 95FSW, but I had trouble clearing on both dives.
I’d be interested to know if you had any trouble clearing?
I contacted my dive instructor/boat operator and he asked if there was any pain associated. There was none and the vertigo was manageable so he suggested to wait a day and see if it cleared up on it’s own. Sounds similar to yours... rocking boat feeling randomly throughout the day. It started about 2 days after the dive and lasted about a day and a half and then went away.