Stressed

I am in a weird mood. I had an interview last Friday. It was for a part time position, on just Saturdays, for a few hours in the morning. I was asked to start working there this week and I didn't think much of it. Because we didn't discuss the exact numbers, everyone I know is telling me that was careless. Friends and my dad are saying that I need to figure it out ASAP, or the company will rip me off for sure. I am the kind of person that has a hard time talking about money. I feel uncomfortable. In a way I don't want the employer to think that I am greedy or ungrateful. I know, it's dumb. Today I am just dreading the phone call that I will make soon. How am I going to bring it up? How much am I going to ask? What to do if they offer less? How much less is too little? Sigh. I get stressed just thinking about this. Because I am not working full time these days, I think about jobs more openly. At the same time, I don't want to be taken advantage of, I mean... no one does! We'll see what I come up with tomorrow.