TeenHealthFX is glad to hear that you went to the doctor about what you feel is excessive body hair and sweat. This could be perfectly normal as your doctor said and nothing to worry about physically. However, sometimes this can indicate a medical concern. If you still feel that you have a medical condition, talk to your parents and see another doctor like an adolescent medicine physician or an endocrinologist (a doctor who specializes in hormone problems).
Keep in mind that it could be normal and part of your family's genetics. For example, if your parents, brothers and/or sisters have excessive hair growth, you are more likely to have excessive hair.
Often females with excessive hair growth that is not normal have acne, irregular periods and/or are to some degree overweight. Also, if the excessive hair growth appeared over a short period of time, it is likely to be a medical concern.
Medical problem or not, this can be very hard to deal with emotionally. Unfortunately, you may need to adjust to this because there is little you can do to change your bodily functions like hair growth and perspiration. If you are not already, start using deodorant/antiperspirant. If you are sweating excessively, you may need to re-apply this 2 times per day. As far as your hair growth goes, talk to your mother or a female relative about shaving, electrolysis, waxing or laser treatment. Do not pluck excessive hair because it often leads to ingrown hairs that are likely to get infected, which can lead to scarring.