No menstrual period since miscarriage on 7 july 2017. given one shot of depo after miscarriage. please help?

May be normal: It is perfectly plausible that that single shot of DepoProvera has suppressed your cycle up to now, especially if your periods were irregular before the pregnancy. It is also possible for you to get pregnant again without ever having had a period. You can do home pregnancy tests occasionally as a precaution, but your periods could take until July to resume.