While it does look like there is a huge turn-over problem at your company, I wouldn't have called in sick within the first 1 1/2 months, especially if I was "temporary", unless I was deathly sick. I just don't think it leaves a good impression.
I'm sorry you're so unhappy at your job. I know (from personal experience) how aweful it is to be unhappy at work. We spend so much time there!!! I hope something will come of the interview you have lined up. Good luck!