Should I be upset with a teacher who keeps calling me “little orphan boy “or am I just being over sensitive?

Nearly a year ago I lost both my parents and also my brother when our car was in a crash.One of my teachers keeps calling me “little orphan boy “.I’m not sure whether he intends it nastily or just playfully but I don’t like it either way. I tried telling him this but he just said I was over sensitive and to stop being so touchy feely. I don’t know whether it is me being touchy feely or if he means it nastily.Some of my friends say I should report him but I don’t want to get him in trouble if he doesn’t mean it nastily but I don’t know whether he does or not so what should I do?

UPDATE. I have now spoken to my grandparents (who are my legal guardians) and my grandpa has spoken to the principal yesterday.(Mon 31st March).The teacher is now suspended while it’s investigated.