yes it's possible. lots of people have it. has a doctor checked you and said you don't have it? if that's so many people can be in the low end of the "normal" range and have all the symptoms yet the medical guidelines won't allow the doctor to treat the problem unless it gets worse. it might be worthwhile to ask for a referral to a good endocrinologist if medical treatment is available.
im 27 and ive had almost all of the symptoms since i was about 6 years old could it be possible i have hypothyroidism?