I had a yest in for almost 5months. 2 months into having itching discharge I use generic cream. Kinda work then I went to the doctor. Is that bad?

Hmm. As long as you 'feel' ok then it is as "bad" as you feel it is. My advise is to go to the doctor' get evaluated and treated correctly; and be done with the whole thing.
No. Most of the time, a yeast infection will not harm your health. Glad you got treatment.