I'm so sorry to read of your troubles, Alpaca! I second James's suggestion of the Waterpik. The one I bought has a range of settings from barely pulsing to quite strong. I have to think you can find one where you live. At a minimum you can get it on Amazon (always use the OCF link!).

Sending good thoughts your way.

David 2
SCC of occult origin 1/09 (age 55)| Stage III TXN1M0 | HPV 16+, non-smoker, moderate drinker | Modified radical neck dissection 3/09 | 31 days IMRT finished 6/09 | Hit 15 years all clear in 6/24 | Radiation Fibrosis Syndrome kicked in a few years after treatment and has been progressing since | Prostate cancer diagnosis 10/18