How do doctors determine conception dates?

My conception date is may 25th and I have a due daye of march 1st, can conception dates be off by up to two weeks or more?

I have a apointment with a doctor on thursday because my family think i siffer with depression,i know i do sometimes.but i do...

I am 16. Can I make doctor appointments by myself?

is anyone hear a doctor or something of some sorts?!!

HOW LONG SHOULD i WAIT TO GO TO THE DOCTOR FOR BLOOD WORK TO KNOW IF I AM PREGNANT?

Hello. I have a doctors appointment in about 2 hours. I am 34 weeks pregnant and haven't had an appointment since October. Pl...

I missed my shot date 3/13 if I get the shot on monday do you think that I have to start all over

Why dont ear antiseptics ever have expiration dates? How you suppose to know? Please dont tell me to try it them I know, beca...

Secretary ward clerk practice transcriptions,abbreviations, doctors orders, ect.

Why do doctors leave the room when you change? They're going to see you naked anyway?