2nd month off bc pill, had period at cd 33 last month, currently on cd 44 with no period. is it normal to have a regular period and then miss the next one? we are ttc but getting negative pregnancy tests.

It happens sometimes: Home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. If done sooner, a negative result may be due to testing too early such as less than 2 weeks after conception.