Generally I find stomach aches to be the worst. Headaches and the odd ache here and there are bearable but when it comes to stomach aches, it just feels like the worst thing ever. The worst pain ever I have ever experienced actually has a bit of a funny story to it, though it may not be very classy for this forum so I apologise in advance if you find it a little sleazy.
I was probably around 20 at the time and a female friend of mine invited me over to her house to "check out" her new flat. I knew it was for more than that but even she knew that I would not travel to where she wanted me to go (South London which is an absolute ghetto area) so when I asked where the flat was, she responded that it was in a place that wasn't too far from where I worked. After work, I got on the train and 20 minutes later got off at the stop. She then told me to get on another train to another stop. Well, okay.....Then got off another stop where she told me to exit the station and....walk to another station where I was to get a train to the area. Long story short, she knew if she told me the location initially I would not go so got me there in increments, making me feel each stop was where I needed to be.
I got out the station and it's what I hate and fear the most. Hoodlums. This was just after the London riots and there were kids aimlessly riding their bikes in circles, graffiti everywhere, rubbish blowing around the streets and the odd chicken with a (I presume) hygiene rating below 4 stars. I made the journey so thought I might as well press on. Got to flat, started to chat then got to down to business. During the warm-up, with her hand she yanked my thing back way too hard and fast and I felt the most excruciating pain ever. I rolled over, falling off the bed, nearly in tears. She was screaming "oh my god, are you okay?" and I was just whaling in pain. It took me a while to calm down and lift my hands from the area and there was blood everywhere; on my hands and on her cream carpets.
I managed to take a look and without going into details, it wasn't pretty. She had snapped my frenulum and it was all just so painful. I got my clothes back on and left, limping. I noticed it was almost sunset and that even more hoodlums were due to be in the streets. I am a big person but I was visibly in pain, had a weird limp and just felt vulnerable. I was struggling to move the pain was so bad so got my phone and called 111 (the non-emergency service) in the vein hope they would send an ambulance as I was in so much pain. The lady over the phone asked me what happened and I said "my frenulum broke and there's blood everywhere". She said "your what?", (testament to the lack of knowledge people who operate this line have) , and I explained the "the bit on the top that connects the skin to the..." and she hung up. What a bitch.
Now, I was on my own. I just had to suck it up and get to the station before sunset. Limping, sweating and in severe pain I managed to get there, make my way home and assess the damage. By now, I was still in pain but it was more of a numb feeling that only got really bad if I tried to pull things back or take a proper look. To conclude, the healing process was longer than expected and a couple years later I had to undergo my first and only operation to get the frenulum removed as it was causing problems.