Stormy Sunshine,
Hope all is well with you now.
My experience was similar. I was so ill, called the emergency number and was in an NHS hospital within 12 hours, pumped full of antibiotics and pain killers and discharged three days later as, I presume, it was New Year's Eve and the entire ward was being emptied
After discharge, I went down rapidly and a friend took charge and had me admitted to a private hospital - thanks to BUPA. I said farewell to a significant part of my colon but was told that had it ruptured, which was likely within days, I probably would have died.
I think the NHS, in some areas, is so understaffed that things get missed. I pay tribute to those working under such stress and nurses are, rightly, called angels, They work tirelessly under difficult conditions.
Now that I am widowed and retired, I am constantly reviewing my BUPA membership as it has become so expensive but, perhaps, like you, I will have to get used to eating baked beans!
I shall consider opting out and putting the money into a savings account but I think I should have done this years ago!