Effects - Speed?

[anony]

Hi
Last night (Saturday) swim bought a gram off his dealer(newly recruited) of what was meant to be coke. Swim was already rediculously drunk and had reason to believe what he'd bought was coke. Sunday morning swim had some left and shared with his friend at work. An hour or so before swim finished work, swim started to feel really shit, very depressed. (Not fiending for more though). After work swim went for a drive, got a kfc (felt hungry) although whilst eating it began to feel sick. Now swim can't sleep although very tired, feels very very depressed, feels like swims head is about to bloody explode! Swim has work soon but at this rate will be a no-show.
My question is, is this effects of speed? Swim can't really remember the effects he was feeling last night although didn't really feel any effects with todays consumption. Didn't have any problems sleeping from what swim can remember.
Also if these are speed effects, how long will it last?
Any help is appreciated. thanks
p.s. swim hasn't spoke to his friend yet so don't know what effects he's feeling...