yes
wait a week after your missed period and if it still hasn't come then you should take a pregnancy test
im no expert here but i would to the doctors about it, sorry if this didnt help but that is my advise. good luck:)
No it is not. You should see a doctor and have it checked out.
You should get your next period , about a month from when you got your last period.
On average yes, no baby will be born exactly on a nine month period but the predicted date the doctors gave you should help to decipher it. At nine months a baby is fully grown ready to be born so before the nine month period a baby born is classified as 'premature'
Unless you are pregnant or have had a hysterectomy operation, you should have a period each month (28 days perhaps).
No normally your period should only come once a month but if your period has just started then they usually take a while to settle into a pattern. If it continues you should visit a doctor.
Yes you should
If you miss your period and have had sex that month
You should get you period about once a month, every four weeks or so.
stress, illness, or (sorry) pregnancy....happened to me