First things first. Take a pregnancy test if your period is overdue. If you are not pregnant but you haven't had a period for a while it may be perimenopause. If you're approaching 50 your body is getting ready to take a break! Ask your doctor for more details.
Being pre menopausal is when your hormone levels decrease and you stop ovualting and releasing eggs. When you finish going through menopause, you are physically unable to bear children. when your pregnamt your hormone levels are high and your carrying a baby inside of you. Ususally you get pregnant in 20-30's and get pre menopausal 40-50's.
When a female is pre menopausal their body is preparing to no longer be able to produce eggs which will result in a pregnancy. During a pregnancy a females body is preparing for a baby, the embyro is implanting, and your go through hormone changes to support the growing baby.
some symptoms of pre menopausal is hot flashes, headaches, hair loss. But if you are pregnant you would have morning sickness. You also have heartburn take a pregnancy test.
If you are pregnant, your period has stopped because you have conceived. If you are pre-menopausal, your period has stopped because your body did not release an egg or the hormone levels are too low to have a menstrual cycle.
Simply, being premenopausal means your periods get irregular, sex drive decreases, and fatigue. Being pregnant means morning sickness, swollen ankles and feet, and fatigue as well.