water rejection during enema

Hi everyone,

Today I had an unsuccessful enema - the solution leaked out immediately after entering the colon. I managed to get in only a tiny amount. After emptying that I tried again - same result. The water just refused to go in!
It was a salt water enema.

I've been doing enemas for 8 months now, it never happened before. There was a slight discomfort/pain when entering the enema tip. No blood. I had a good BM right before.
I am on repeated Hulda Clark parasite cleanse, so I do not think it's a huge parasite stuck there.

Is it possible that the rectum is damaged?
I do not have anal sex. My last enema was a week ago, there were no unusual or painful sensations since then.
Thank you for consideration.