When i'm cold..

usually my fingers puff up and it kinda hurts than it itches..
I wasn't like this before, and I could enjoy the cold weather. But lately I've noticed that when it's cold, suddenly my fingers/ arms/ toes would swell up.They aren't that huge but sometimes they are obvious and they look like mosquito bites..

I did not take/consume anything that may have triggered this..

I searched online whether it's cold allergies or chilblains I dunno but they both are common where I have to avoid cold.. wherever I go it's usually cold.. in my room (me and my sister share same room and she often turns it on) and in the school bus (I live in a tropical country) and in the classroom.. (I have a jacket but it's not thick enough)

I have no idea what this is and if I should tell my parents that I need to go the doctor or something..