Don’t try this at home

I managed to swallow some descaler liquid the other day. Active ingridients sulphamic acid and citric acid.
I was descaling the hot water kettle in the morning and decided to leave the descaler product working during the day while being at work.
When coming back home I had obviously forgotten all about the descaler and put the kettler on.
I soaked some rice noodles in the acid water and I made some nice miso soup from it.
The noodles tasted a bit funny (sour) but it wasn’t until I had a few sips of the soup I suspected something was very wrong.
The soup was very sour and soon my lips and tounge had a tingling sensation. While thinking why on earth the food would all taste so sour it struck me that I had left the descaler in the kettle.
I summoned the pack quikly to see whether it provided any warning texts. Right after “keep away from children” it said “seek medical advice if swallowed“.
It was a bit late so instead of seeking medical advise I drank a couple of pints of milk and decided to weather it out. A quick search on the internet for “swallow descaler” led me to the helpful page of Emergency treatment of self-poisoning or overdose. The page assured me that diluted commercial descaler shouldn’t be lethal.
Woke up in the middle of the night due to a rumble in my tommy. Had a couple of bowls of Crunchy Nut with some more milk which seemed to settle it a bit.
Couple of days later and all seems fine. Bit worried about possible complications: “Oesophageal stricture and pyloric stenosis can occur after 14–21 days”. Any doctors around? What’s that when it’s at home?