Your concern is quite understandable,
Lots of girls and women have something called fibrocystic breast changes. This is when small fluid-filled cysts in the breasts change size based on where a girl is in her menstrual cycle. Because these cysts have to do with normal hormone changes, they are typically more obvious and may hurt a bit just before a girl's period. Fibrocystic breast changes are nothing to worry about and don't need any kind of medical treatment.
Infections also can cause breast lumps. So can an injury to the breast — like getting hit in the chest while playing sports.
If you're worried about a lump in your breast, talk to your doctor. Also call your doctor if you have any of these problems:
- pain in your breast that seems unrelated to your period
- a red, hot, or swollen breast
- fluid or bloody discharge from your nipple
- a lump in your armpit or near your collarbone
Most breast lumps are nothing to worry about, but it always helps to talk to a doctor or nurse about what to expect as your breasts grow. Getting checked out gives you peace of mind.
In this case if the problem is not related to her menses, then it would be better to get this checked with your GP or Ob/gyn after giving local warm compresses, and taking Ibuprofen or Paracetamol,
Not to worry, it is NOT likely to be anything serious,
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