Thanks for query,
It seems that you might have anxiety neurosis
Due to hormonal
changes you may find this type of problems.
In pelvic area there may be some infection like fungus.
Keep that part clean,proper hygiene,
apply atifungal powder locally.
Pain in sternum
area may be muscular but go for ECG to rule out cardiac cause.
Concentrate your mind in study and you will forget your problem.
ok and bye.