I came off my birth control last month (7/15/2011).After doing so,I started my period 7/17/2011).I assumed this was normal due to coming off the pill.My period lasted 4 days,then stopped.My husband and I had sex several times in the next 2 weeks.I then had brown spotting on the 25th and 26th.I am not sure how long my cycle is,which is terrible I know.However,I have been using the My Days app on my phone which tracks my ovulatin as well as my period.It said I should have stared my period Wednesday (8/10/2011).I know eveveryones cycle is different,but I figured up 28 days which would be today (8/14/2011).Yet I still have not started my period.My husband and I are trying to conceive.I have taken several tests which all came back negative.I am urinating a lot more than usual,am extremely tired and have been light headed a lot.I have also been having a white discharge that I do not normally have.I had a miscarriage in October of 2010.I am extremely impatient and was wondering if you had any thoughts or advice.Thank you in advance.