What is the right time to become a mother and at what age can u not get pregnant

As Psychodude says, most women (unless they have an fertility problem) can get pregnant until they hit the menopause. But as the menopause is a physical change, there is no set age at which it will definitely happen. All women are different, and whilst there may be an average age-range for the menopause, there's no guarantee that it won't start before or after the average. There's also the fact that a woman's ability to get pregnant easily will change throughout her adult life. The younger you are, the more easily you can get pregnant, is the general rule, unless there are other factors. The older you are, the less likely your body is to bounce back afterwards after childbirth, and the more the likelihood that there could be complications. So your fiance is over-simplifying things when he says that women have time until they're 40 - being a man, he can only go off what he sees on TV documentaries, what his friends/parents told him, and as men can feel uncomfortable with "women's things", they sometimes over-simplify and create absolutes for themselves, to feel that they understand something and "know" about something which actually varies considerably from woman to woman. If you are concerned about your fertility (and again, this varies from person to person, for a variety of reasons), you could always mention it to your doctor, who would be in a position to give you advice/tests. Hope that helps! The most important thing is for you to make the decision together though.

I have had a baby at 34.

You can basically get pregnant till the moment you are going through menopause, I think you can actually still get pregnant during menopause but after that it's definitely over the natural way. But then still you can get pregnant through IVF till the age of... I believe the oldest done so far has been 67 or something... unless of course your uterus would have been removed by then. But menopause starts at like 45~50 for most women, so till that you could get pregnant naturally unless of course other medical issues would already be present or arise in either you or your fiance.

A baby is the biggest decision you will ever make in your life. You need to be financially, emotionally and spiritually in the right place to bring a child into this world. Age has more to do with your maturity and not the number. Pregnancy can happen until 1 year after your last cycle. Think long and hard about why you want a child and YOU decide the right time. I have 6 children-3 biological and 3 adopted with disabilities. Raising a baby to become a contributing member of society is a long journey filled with laughter and tears. For me Priceless.