could you tell me if using cyclogest pessaries will stop or delay my period? I was using Gonal F injections to stimulate ovaries but on day 9, hospital suggested halving the dose which caused me to have withdrawal bleeding for 2-3 days which reduced the lining to 5mm. I am wondering if I stopped taking Cyclogest my periods will start and that they are only being suppressed by the progesterone. I am in my first cycle of ov. induction and have been using cyclogest twice a day for the last 17 days. I have been having terrible period-type cramps since i started using them. I did a preg. test 3 days ago and one today, both of which were negative.