hello,
Welcome to HCM.
There are several reason of missed /delayed period.
Your
pregnancy test is negative and got period.You may confirm with USG lower abdomen.
It is probably due to
hormonal imbalance,stress or irregular eating habit.
Wear tight breast support to get relief of tenderness along with take
PRIMOSA 1000mg capsule daily for 1 month.
Take healthy diet,avoid stress,proper rest and do
meditation in early morning.
Be well and tc.