I'm trying to find a fic I had read a while ago but I never saved it sadly. All I remember is it was a eventual Sterek fic. It started out with the pool scene and Stiles went under and got water in his lungs but not enough to kill him just enough to give lung problems(I think it was a pneumonia.) Sadly that is all I remember.
friend i have a feeling this fic is
Its All I Can Do by TonyStarkIsARobot (5/5 | 8418 |T+)
This is what happened the night the Kanima struck at the pool. This is why Stiles really held Derek up and this is what happened when Scott got there two minutes later than a good friend should have.
Based off the prompt: “Stiles shoves Derek to the top of the pool even as he’s drowning because Derek is worth so much more than Stiles could ever be.”