Employer gave me business card called references and is emailing me back what does this mean for me?

Okay I went on a job interview 2 weeks ago I got called from references that they received a called from the hospital which I had my interview at I did a follow email and said thank you all my references told me they said great things about me and the employer told me in the email yesterday that final designs will be made wensdays morning will I get a job offer and if so how long does it take for them to contact you with the job offer?