get ready boy because I got a butload for 2#

1) https://www.fanfiction.net/s/5534978/1/You-could-be-happy
It's a wonderful life... or is it? Left alone over Thanksgiving break, Sam gets disturbing dreams of what his family would have been like, had he not been born. Featuring amnesia!Sam, sick!Dean, and remorseful!John (this one has Azazel in it!)
2) https://www.fanfiction.net/s/5316145/1/Heavy-Affliction
On a hunt, Dean and John learn some things about Sam he has been holding out on. Sad!Hurt!Sam15 Pissed!Angsty!Dean19,John
3) http://archiveofourown.org/series/18547
Sam doesn't go to Stanford. Everything goes downhill from there (personal favorite, really depressed Sam in this one)
4) https://www.fanfiction.net/s/4618333/1/Flick-of-the-Switch
When Sammy's visions go haywire and start attacking him physically, will the Winchesters and the other hunters be able to save him? Hurt/Limp/eventually Hypothermic Sam, Angsty, protective Dean and John
5) https://www.fanfiction.net/s/12188960/1/Leave-Normal-Alone
Pre-series. References to 7x03, The Girl Next Door. Dean finds a case of mass kidnappings, all children. John insists that it isn't supernatural and asks him to leave it alone, but 19-year-old Dean can't resist playing hero. If only he knew that meant drawing too much attention to himself and to Sam. Some cases are better left to the police. Dark themes and content
6) https://www.fanfiction.net/s/3556794/1/Soldier-Boy
AU. 18 yr old Sam Winchester doesn't go to Stanford like his Family thinks he did. Instead, he ends up at Parris Island and then the battle fronts of Iraq itself. This is the story of that Journey and after (not really hurt in this one but soooooo much angst)
7) https://www.fanfiction.net/s/7153701/1/Somewhere-in-the-Middle
Something is terribly wrong. Will Sam survive? Will Dean forgive himself? Will John be able to hold them all together? Seriously hurt/Sam; Seriously guilty/Dean; Seriously worried/John (amazingly told and in this one Dean is the one hurting Sam)

Do you want me to go on? And sorry I can't link even if my life depended on it.

Awesome! Thank you very much.

If you have some more (and have time to look the links up) feel free to add them :)
Can't ever get enough ;)

Ok you asked for it

1) https://www.fanfiction.net/s/5236194/1/Heat-of-the-Moment
When Sam is late home from school, John’s own brand of discipline goes a little too far. Sick Sam. Angsty/angry/guilty Dean. Angry/guilty John. Dean 19, Sam 15
2)https://www.fanfiction.net/s/3691343/1/House-of-Burden
Within its walls lives a family that has never been touched by hate, fire or the Supernatural… but for one (It is soooo much better than it sounds don't let it fool you)
3) https://www.fanfiction.net/s/10270160/1/Human-Born-Demon-Bred
Ten years ago, Sammy was kidnapped by demons, and Dean couldn't save him. The two are reunited when Dean summons a crossroads demon to save John's life, and Sam is the one who appears. Dean is convinced that Sam is still human somewhere deep inside. The problem is that nobody – not even his brother – agrees with him
4) http://rei-c.livejournal.com/845380.html
super secret agent Sammy rocks!
5)https://www.fanfiction.net/s/4259658/1/Your-Latest-Trick
Complete AU to BUABS. Meg threatened something much worse than Sam biting off his own tongue…
6) https://www.fanfiction.net/s/8166301/1/Third-Wheel
Sam Winchester didn't feel as though he was part of the family. It wasn't until a hunt that his brother and father realized that fact. John turns to Bobby Singer to help bring their family back together. AU angst/hurting/Sam, neglectful/John and Dean, awesome/Bobby, some language
7) https://www.fanfiction.net/s/3791492/1/Growing-pains
15 year old Sam faces another move, another battle with his dad, and the neglect that surfaces when Dean isn't around to be the buffer between them. Limp Sam to come, and whumpage for Papa Winchester and Dean too!
8) http://archiveofourown.org/works/4545330
Sam Winchester doesn't often feel hate.
Well, that's untrue.
His hate is just mostly reflected inward. (I don't know why but I really like reading about emotional hurt Sam)
9) http://archiveofourown.org/works/10947954?view_full_work=true
Sam Winchester shot himself in the head nine years ago, leaving Adam and Dean to pick up the pieces of their lives and take on their father's hunt for the yellow-eyed demon. Now they've been zapped back into the past, just in time to stop their teenage brother from pulling the trigger.

That are the best ones I have, just be carefull. I have almost none reading quirks or triggers, so just read the warning/ triggers. I don't want to be the reason why you have a bad day when you're supposed to have a good one because of hurt Sam