added more info

knowledge.txt

@@ -15,4 +15,50 @@ Hormones are chemical messengers.
 The ovaries release the female hormones estrogen and progesterone , which cause the lining of the uterus (or womb) to build up. 
 The built-up lining is ready for a fertilized egg (an egg that has joined with a sperm) to attach to and develop into a baby. 
 If there is no fertilized egg, the lining breaks down and bleeds. 
-Then the same process happens all over again.
+Then the same process happens all over again.
+
+
+While timelines can vary, most girls get their first period within 2 – 3 years after the development of breast buds.
+The average age for girls to get their first period in the United States is around age 12.
+It's important to emphasize that periods are a normal part of growing up. 
+Young girls should know that it's okay to talk about periods and ask questions about them. 
+Some young people may have anxiety about how to handle their first period, given that it can happen unexpectedly. 
+Providing supplies (pads, tampons, and pantiliners) for your child's locker or backpack and reviewing resources at school, including the school nurse, can help alleviate this worry.
+
+While some girls will have bright red blood with their first period, other girls may only have spotting with red-brown discharge―both are normal! 
+While some people will have periods once a month, periods may be irregular in the first few years as the body adapts to rapid physiological changes.  
+Also, normal cycles of periods can be as short as 21 days or as long as 35… so even people with regular cycles might not have a period every single month!
+
+Abdominal cramping or pain with periods is also common. 
+For most people, ibuprofen or naproxen used as needed are the best medicines to help with period cramps. 
+If menstrual cramps are severe or causing your child to miss school, talk to your pediatrician about other options.
+
+Puberty is the time when kids grow into young adults through physical and emotional changes. 
+This doesn’t happen all at once, but slowly over time.
+It's good to know about the changes that come along with puberty so you know what to expect.
+
+For most females, the first physical change of puberty is breast development. 
+It starts with small, firm, tender lumps (called buds) under one or both nipples. 
+The breasts will get larger over the next year or two. Dark, coarse, curly hair will appear on the labia (the folds of skin surrounding the vagina).
+Later, more hair will grow in the pubic area and under the arms.
+Their body shape begins to change as their hips widen and they gain weight and body fat. 
+Expect the first period (menstruation) about 2 years after breast buds appear, usually between the ages of 9 and 16.
+Most females have a growth spurt about 1–2 years before their period starts.
+After they get their period, most females grow about 1–2 more inches before growth stops.
+
+What Emotional Changes Happen During Puberty?
+Just as those hormones change the way your body looks on the outside, they also change how you feel on the inside.
+While your body is adjusting to all the new hormones, so is your mind.
+During puberty, you might feel confused or have strong emotions that you've never had before.
+You may feel anxious about how your changing body looks. You might feel get upset or lose your temper more than usual.
+It's easy to feel embarrassed or anxious when talking about these topics, but you need the right information. 
+If you aren’t comfortable talking to your parents, you might talk to your doctor, a school nurse, a teacher, or a school counselor.
+
+What Else Should I Know?
+Even though everyone goes through puberty, we all go through it a little differently.
+Some of your friends might have gotten curves, but you haven't yet. 
+Maybe your best friend's voice has changed, and you think you still sound like a kid.
+But eventually everyone catches up, and the differences will even out.
+Keep in mind that there is no right or wrong way to look. 
+We are all unique, on the inside and the outside.
+