Transferring to Pitt?

<p>Hello everyone,
I am currently a freshman at a college and I'm looking for ways to transfer to University of Pittsburgh. I was accepted into the main campus when I applied to Pitt but I decided to turn it down for various reasons. Now, I'm regretting my decision since this college I am at does not seem to fit me and I think Pitt would be a better option for me. So, here are my questions. Should I transfer now or stick it out for one semester or a whole year? Also, what would be my chances of getting into main campus again and how should I go about doing so?
Any opinions/answers would be great! Thank you so much for your help!</p>