you may have a tick bite
you may not; other insects are available
Regardless, Lyme tends to be transmitted after relatively prolonged attachment (24+ hrs) and, if they occur at all, bullseye rashes tend to appear in 3-4 days or longer
I’d guess that the chances of you contracting Lyme as a result of this are tiny, regardless of where you were. Not non-existent, but very low. I suppose your GP might offer you an antibiotic – especially if it looks infected as they could cover both possibilities in one (I’d certainly keep an eye on that if the red area expands)
ScaredyPharmacist. Registration details available on request