Hello,
Welcome to ehealthforum and thanks for writing
The symptoms described by you as delayed period,breast tenderness,cramps are indicative of pregnancy symptoms and if you had unprotected intercourse then high possibility is there that you have conceived.
Wait for few days and after a week of the expected period date get a Blood hcg test done for pregnancy determination as it would give accurate results.Urine test can take time so it is not reliable.Kindly visit a Gynaecologist for evaluation.Avoid stress and have balanced diet.
Take care!