I put an add on Craigslist that I needed a stay at home job like baby sitting etc. well I got a text message from someone saying they will pay me eight hundred dollars a week if I post some adds for them. Well I did this for three weeks then they sent me a check in the mail for twelve hundred dollars. I cashed it but now they are saying it was fake and a scam. Am I going to be in trouble for this or what will happen to me I had no idea that it was a scam.