Bitten by insect, burning sensation...?

so i went runnign and got back, and there was this spider, beetle thing on my neck, i felt something crawling so i like crushed it and shot it off because it scared me, and now i have this burning sensation, i was wondering should i be worried about this? im pretty sure it bit me, and when i killed it i heard like a cracking noise but i didn't really squish it unno how to explain it, but anyway should i be concerned about this