Can I sue a hospital for diagnosing me with chlamydia and giving me medication, if I never had it?

You should contact a Minnesota personal injury lawyer.  Most will give a free consultation and work on a contingency fee basis. so they won't collect from you unless you get an award or settlement.  The attorney will be able to evaluate your claim based on the facts provided and will likely give you an honest assessment of whether there is a claim that's worth pursuing.

Hello.  In order to evaluate the matter, I, as an attorney, would need to confer with you to question you and to obtain the full details of the situation.  There are many necessary elements to successful legal claims, and it is the role of the attorney to analyze your claims and the facts of the matter; each matter is unique.  I recommend that you telephone several attorneys in choosing an attorney to help you at this time.  You should feel comfortable with the attorney and a sense of great trust and confidence.  It is urgent that you act with no delay or postponement, because there are typically rigid time deadlines to action, after which you will irrevocably and permanently lose your rights to make a legal claim.  Also, in my work experience as a practicing attorney, the sooner the client seeks attorney counsel and assistance, the more positive the outcome is likely to be, because often there are several possible paths of action to be explored.  All the best.