help me..... I was sick at work an had a asthma attack an had to leave an rush to the hospital. I was fired for this an want to know is this legal an

Probably not.  The company cannot terminate you because you suffer from asthma, or had to go to the hospital to treat your condition.  There are different statutes that may apply to your case depending on your specific employment situation, number of years you were with this company, and if you were full time or part time.  For example, either the FMLA or ADA may apply. Contact an employment law attorney to review this in more detail