Every one here is right; do get it treated right away! And insist on getting tested if you even suspect you may have it.
My DH went undiagnosed with Lymes for well over a year. He was very ill and couldn't work; lots of common symptoms but the docs here in Arizona wouldn't even test for it back when he got it in the 90's. We finally got him tested and treated. He never had the classic bulls-eye rash either, but his test results were definitively positive. After almost a year of various antibiotics, he's left with tremors, insomnia and other various neurological problems. He's been disabled since; changed our lives dramatically.