Should I resubmit my paper to get the attention of a slow reviewer? I have submitted a paper to Proc. Am. Math. Soc.  My advisor said to submit to this journal.  It's been over 3.5 months with no response.  I have made several  edits to my paper, but none that essentially change the structure of a proof.  The original email contained the following message:


  Submission of unrequested revisions is discouraged. If SUBSTANTIAL 
  modifications are absolutely necessary after initial submission, the 
  above link can be used to resubmit your article. Please limit the use 
  of this link to one resubmission.


Based on these words I would not resubmit, but I am wondering, since it is taking so long, should I just send in the current version to perhaps get the attention of the reviewer?
This is clearly answered in the comments by @Stephan Kolassa (making community wiki here just to post an answer for the question).

Absolutely do NOT resubmit the paper! If you do, you could end up having everything rejected.

Contact the editors of the journal. 3.5 months is not such a long time for journal review in many fields (unfortunately) but it is sufficient time to warrant a quick friendly email to the editor asking what the progress is. 

Though you should not pester the editor, contacting them after 3.5 months seems perfectly reasonable. But keep a friendly/deferential tone. (Don't demand or complain ... just ask for info.)

(And best of luck with the reviews. The first submission is always the most nerve-wrecking. If it works out, then great. If not, try not to sweat it too much. Rejection happens to nearly everyone.)