What is wrong with low pain on the right and why is it used as contact a doctor if pain is especially on the low right?

Pain low down on your right side is an important warning sign because other organs sit right there, and things that are not period cramps can start with that exact kind of pain.

Why doctors watch the lower right side

Period cramps usually happen across the whole lower tummy or in the middle, because that is where your uterus sits. When pain settles specifically low down on one side, especially on the right, it could be something completely different that needs quick medical attention, like your appendix acting up or another issue that has nothing to do with your period at all. Doctors ask about that specific spot so they can catch those problems early before they get worse.

What it feels like compared to cramps

Sometimes people get a quick twinge on one side in the middle of their cycle, which can be ovulation. That twinge usually lasts just a few hours. But in the first couple of years most cycles do not release an egg yet, so there is no way to be sure what it is. With ordinary period pain, feeling a bit sick can come with cramps too, but strong pain stuck on the right side is not something to just brush off.

When to tell a grown-up straight away

Tell a grown-up straight away if you're being sick, can't eat, have a fever, the pain is on one side (especially low on the right) or keeps getting worse, or you have tummy pain and feel sick without a period.

Also, for regular period cramps, tell a grown-up if the pain stops you doing normal things like school, doesn't get better with the pain relief a grown-up gives you, or keeps getting worse from one period to the next. There are medicines that help period pain, and a grown-up decides if you take one, which one and how much, for your age and weight. A heat pad, or a hot water bottle wrapped in a towel that a grown-up fills, can help too, and in a few small studies heat worked about as well as medicine.