Please help me im worried?

[Peter]

Ok so i was browsing a forum yesterday and saw a post with a picture attached, i couldn't make out what the picture was so i clicked on to it. The picture was a screenshot of another post that someone had made where they had posted a picture of child pornography, the image was censored, when i saw what it was i exited the forum immediately and blocked it through my virus protection and through my ISP's website. I want to know does this count as viewing child pornography because i don't want to get in trouble with the law if it does and if it does will anything happen to me because i didn't intentionally go looking for child pornography and if i knew that it was child pornography i wouldn't have clicked on it. Please help im freaking out