I have no clue where in the series this would be. Just letting you know that. For sure before season five where Leonard and Penny are back together, before Priya too I'd think.
Most likely after the episode where Penny has a one night stand with Leonard and Leonard attempts to do the same to her. [I can't remember the season or the number] but somewhere around there. I think that's season two somewhere . . . ?
He really didn't feel well. He rolled onto his side. His head hurt and he was tired. He fell asleep against his headboard. He wouldn't call anyone he was fine. He was used to being on his own. He was always left to his own devices now was no different.
The next time he woke up he hurt worse. His chest hurt his throat hurt. . . everything hurt so much. He was stiff and in a lot of pain. He pulled the blankets around his shoulders tighter he shivered. He was sweating profusely. He snuggled back under the sheets and fell asleep.
He woke up again coughing harshly. Oh God, how that hurt. Sitting up was a real challenge. He almost wished Sheldon was home. Oh GOD! Sheldon what time was it. He tried to get up but couldn't move his legs he was in so much pain.
He heard the door open.
"I don't know why he didn't come get you," Howard's voice reached his ears. "Leonard?"
"Leonard?" Sheldon's voice carried to his room. He could barely open his eyes.
Raj knocked and Leonard tried to respond but couldn't. He had no voice. Raj opened the door.
"Holy Crap," he knelt down and took Leonard's hand.
Sheldon and Howard appeared.
"Leonard tea and Soft Kitty are non optional." Sheldon said leaving the room.