Natural birth but low pain tolerance

I love the idea of a natural water birth but my pain tolerance is SO low. I literally cry over period cramps and want to die when I have diarrhea. Like I can't deal with pain. and I get frustrated and overwhelmed and anxious and pretty much hysterical sooo easily I can see myself just freaking out crying and yelling at everyone. But it just seems so beautiful. I'm just not a calm person and I HATE discomfort and pain. I'm a wimp☹☹☹