Bitten By Something?

[a3tsw]

Went out running this morning round a lake here in Phuket , just before sunrise , when finished I noticed what looked like blood on my vest , when I got home and jumped into the shower , WOaow . stinging like hel_l around the area where the blood had been on my shirt and small red spots appeared.

Anyone Know what this could be and anything that can be done to protect oneself against these bites?

I don't know whether these got into my shirt inside my house , as I lay my stuff out on the bedside cabinet the night before I go running or got onto my clothing during the run , incidently , there was no itching , so not mosquito , I think and the location very close to the sea.