Battery mishap on X40, help!

[kadf88]

I was using my laptop in bed and it was resting on my sheets (is this not good for heat circulation?) and when i was done i decided to take out the battery and put it back in, when i did this a bit of my sheets got seeped into the back of the laptop with the battery, it was tight trying to put the battery in and i was like, this is tighter than normal, iforced it a bit the first time then i let off, and i realized what was happening. i put the battery back in normally after and all seemed ok.. did i damage anything?

how tight is the battery (i have the 8 cell) supposed to sit?

any help would be appreciated, thanks.