These symptoms can be due to pregnancy
and premenstrually also.
If you miss your period and you have history of unprotected intercourse
then you need to do a urine test for pregnancy.
In case you start your menses, there is nothing to worry.
Moreover symptoms of pregnancy do not develop so early. Its only after you miss your periods that the levels of pregnancy hormone are high enough to make you perceive the symptoms of pregnancy like breast tenderness and frequent urination