Pregnancy is possible only if you were involved in unprotected sex around ovulation time or fertile period. Here, you need to undergo one home pregnancy test at the earliest & one blood test
for beta HCG to confirm pregnancy.
In exclusion of pregnancy, other reasons for late period are hormonal imbalance, ovarian cyst
, high prolactin
level, stress/ anxiety, thyroid problem, wt gain/extreme loss, irregular eating habits, psychological factor etc.
You may require some investigations to rule out underlying pathology through USG pelvis scan, thyroid profile & other hormone assay, blood sugar & prolactin level etc. Consult with your gynecologist and take suggestive measures.
Avoid stress / anxiety, take healthy diet with vitamin & iron supplements
, eat more fruits & vegetables , drink plenty water or juice and maintain genital hygiene properly. Tender breast is due to progesterone
hormone. For breast discomfort, you can wear tight breast support & take prime rose cap.
If you need further consultation with me, then you can visit http://www.healthcaremagic.com/doctors/dr-soumen-patra/63326.
Take care yourself.