Asthma history symptoms and conditions

So basically this is my story.. I am 19 and have had severe asthma every\ since I can remember. I took prednisone up until I was 14, and from what I can remember I just stopped taking it around then. Then when I was about 18 I started up again because my asthma got worse. Between the time period of 14-18 I still had asthma, but started working out and became very active and healthy.I lost alot of weight had VERY THICK long hair. Then at 18 I got very sick and my doctor put me on prednisone knowing my asthma history. After being on it for a month my hair has become thin, I have gained weight, my face has rounded, my skin used to get tan very easily but now just flushes. I have headaches all the time, can't sleep at all during the night, then crash during the day. I am constantly depressed. I always have to pee. I can't be at the gym for more than 30 mins and then I just die im so tired. I can go on and on. I have tried so many time to get off but like I have read from the above comments,I become very sick and lazy I literally can't move. But what I need answers for, and what I was wondering, has anyone started to get hives/rash after coming off or being on prednisone. Every time I try to wean off of it I get them all over my legs!! NOTHING and I mean NOTHING makes them go away except when I start up prednisone again. My doctor thinks its okay and no other doctor can figure out why im getting these hives but its so obvious its from that because when I go back on it goes away. This is not a good medication to be on. I haven't seen hair loss as one of the major side effects but has that happened to anyone else. im praying to god i can wean of this drug if anyone knows anything pleaaaase let me knowwwwwww