This almost certainly sounds like a tic bite to me.
The fact that you did not see a tic is neither here nor there. Most likely it bit you and fell off before you had a chance to see it.
You would do well to get yourself a test from igenex and find out what's going on
best thing for you to do right now is to find yourself a lyme literate doctor in your area to see. You had an insect bite with a bull's eye rash, and now you have 90% symptoms of lyme.that to me says there is a high probability you have lyme.