Hello,
Thanks for writing to us.
I suggest you to undergo home 
pregnancy test at the earliest to rule out pregnancy.
Some early symptoms of pregnancy:
1) Tender, swollen breasts. Early in pregnancy 
hormonal changes might make your breasts tender, sensitive or sore.
2) Nausea with or without 
vomiting.
3) Increased urge of urination and Fatigue.
4) Food aversions or craving.
Other reasons are mental stress, Urinary infection, hormonal imbalance, weight gain etc. You may need to undergo one 
ultrasound scan and hormone test in absence of pregnancy.
Review with test results. Good luck.