Hey girls i really need your help...

I got my last periods on 9th march n haven't got till now...Did three pregnancy test all negative..

I consulted my family physician and she prescribed me medicine to induce periods containing progesterone...I took my last dose on 13th may...I haven't got my periods...I am really tensed about this.. Please suggest me something..😥

(Please note I am going through a lot of stress since March as my exams are approaching...N i won't be free from stress till mid June..N also I have gained pretty much weight since 4-5 months)