Too Many Adverse Effects :(

Ok I need to figure out why my body does not agree with medications ! I have asthama and I tried Singular,advair,Flovent,and avelox(For bronchitis only) I find that all these medications gave me BAD adverse effects ! This is not a sign of an immune probelm :(? And another probelm I have is when I exercise my right are gets bigger than my left! I have stretch marks on my right arm ONLY and my left arm is smaller. I will say I'm right handed but my right arm also burns and itch along with getting bigger and stretch marks ! When I take predgizone (sorry for spelling) , I get the normal side effects my face gets fat and I gain weight very quickly! I no longer take advair,singular, and only use pregdzione for bronchitis I also don't take avelox because of the different adverse effects I had .