Going back to work?

I received a call this morning from my previous company which I have left 3 mths ago. It's the same position but it's at a different department.

The lady spoke to me before I left, they were planning to create this position but were waiting for management approval. I haven't really thought much about it since I left and I supposed they wouldn't call me since it has been awhile..

Anyhow, I'm in 2 minds about it. I'm worried about going back to a company I have worked in for such a short while, afraid that I can't cope... yet.. times are bad now. I need to start looking for a job to get money for my meds since I'm in private healthcare and it's not subsidised.

Why do I have to be sick? The amount I spent this year alone can be used for a good holiday!