The heat doesn't bother me much more than it used to, but after transition, I did develop an allergy to cold (seriously, it's a real thing.) If I pull something from the freezer and hold it more than a few seconds or come into contact with something really cold for a few seconds, I develop a really itchy rash, though it's possible it's from the couple times I almost froze to death when I was twenty.......but I'm pretty sure it came about due to hormonal changes....