You should contact the the HR dept. at your company to address your concerns first. If that fails, you should then put your complaints in writing, and you should also call local city government concerning the working conditions. You need to establish a paper trail for purposes of documentation. You should also consider retaining an attorney to act on your behalf. You have to prove a causal relationship between your job and the high blood pressure.
Without meeting with you, and knowing all the facts and circumstances of your case, my opinion is not to be construed as legal advice, just general educational information.