I'm feeling awful right now!

I was at my friends all day looking after him as he was very low and suicidal (it schizoaffective) in the evening he just casually told me that moring he had overdosed, taken 28 prozac and 28 abilify. He refused to go hospital but said he felt a bit sick.

This mornig I was getting ready to go to his and he text me to say 'Ive just had bad heartburn and been s* dont come over will text you to see how i am after i eat'
Text me after he ate and said 'now Ive got d*'

So I didnt go and see him, after he ate and it settled he has been fine no s* no d* and feels 100%.

Was it likely to be a sv* or from the od yesterday, if it was a sv* have I been exposed?!