I talked to my doctor about this awhile back. He prescribed me some antibiotics & said if i see a tick that i don't know how longs it's been there to take them. I i know for sure the tick has been there for less than a day don't even worry about it.
Very early this year i had 2 ticks on me. It was April 1 & luckily i went to the chiropractor after work & he saw them on my back. Called my doc & he pulled them out, got me a new script for some antibiotics(the old ones were expired) & he tested me about a week later. No for Lyme.
I never felt them at all other than when the doc pulled them. I was concerned because it was so early in the year & i hadn't really been out all that much even though we had a fairly warm spring. No problems since though but i've tried to be careful as i can.