My husband's was a very distinctive bullseye, but I'd want any rash investigated after a tic bite.
Check out these google images of Lyme's rashes. Not all of them have bullseyes.
This picture I posted below looks like your rash. It's from the wiki for Lyme's Disease.
You should go to the doctor. Don't wait another day. The sooner you receive treatment, the better your chances.
http://www.google.com/search?gs_rn=1...DcjC4AP1xoGABg