Port and starboard are easy enough in a powerboat (of the type I am familiar with). Tie up port side, sit on starboard (steer board) side to steer.
But what is most fun is remembering what direction in a channel one is travelling in an area where the channels merge.
Once doctor rules out kidney, cancer, and spinal issues, see a physiotherapist. Before anyone says chiropractic, it’s a scam.