Help!!!!

So I went to the dr because I was bleeding over 3 weeks (ended up bleeding for 4 weeks) well my dr had me take provera again I started taking it on June 6th was supposed to take it for 12 day but the pharmacy only gave me 10 here it is after 10 days going on 2 weeks and still no period I have taken it before and got my period on the 26 of February a few days after finishing it has this happened to anyone