Users' questions

Is it more accurate to go off conception date or last period?

Is it more accurate to go off conception date or last period?

Because few women know the exact day they ovulated or conceived, an ultrasound done in the first trimester of pregnancy has been shown to the be the most accurate way to date a pregnancy. If an ultrasound date in the first trimester differs from your LMP date by seven days or more, we would go with the ultrasound.

How do you know the date of conception?

The first way to find out your conception date is to determine when you were last ovulating. In general, women can only conceive when they have ovulated – that is when their ovaries release a new egg into their fallopian tubes for fertilization. Ovulation usually occurs about two weeks after your menstrual period.

When does the LMP formula start counting pregnancy?

Since the actual date of conception is not normally known, the LMP formula begins counting pregnancy from the first day of a women’s last menstrual period (LMP). This can be a little confusing since counting starts about two weeks before true pregnancy begins.

When does conception occur in a 28 day cycle?

If you have a 28 day-cycle, conception is known to occur between 11 and 21 days after the first day of your LMP. As most of us do not know the date of conception, it is taken as an estimate based on the LMP method. What Is An EDD (Estimated Due Date)? An estimated due date (EDD) is the best guess for a spontaneous onset of labor.

How long does your period last after the first day of your LMP?

Your due date is estimated to last 40 weeks post the first day of your last period. Your menstrual cycle is presumed to be 28 days with ovulation taking place on the 14th day. Thus, the calculator adds 40 weeks (280 days) to the first day of your LMP.

When to add some days to conception date?

If it’s longer, you add some days, e.g., for a 34 day cycle – ovulation is on the 20th day. For cycles longer than 35 days or shorter than 21 days, these calculations are not applicable and you should consult by a doctor.

When do the symptoms of coming off the pill go away?

If your bleeding feels excessive or goes on for much longer than a week, contact your GP. After one month the common symptoms of coming off the pill begin to fade.

Since the actual date of conception is not normally known, the LMP formula begins counting pregnancy from the first day of a women’s last menstrual period (LMP). This can be a little confusing since counting starts about two weeks before true pregnancy begins.

How long does it take to ovulate after coming off the pill?

Coming off the pill to get pregnant: what you need to know. The experience will varies from woman to woman. ‘The main thing to remember is that when you’re on the pill, it is to stop you ovulating. To get back to ovulating, it can either happen straight away or it can take up to six months,’ says Dr Leonard.

Is it true that taking the pill reduces fertility?

Despite a lot of people thinking that taking the pill long-term reduces your fertility, this isn’t the case. Unfortunately, some people have trouble conceiving, pill or no pill, and there isn’t a library of research to confirm that the pill reduces fertility in the long term.