It is unlikely that you are pregnant particularly if you had your period last month and did not have any unprotected sexual intercourse this month.
There are chances of you being pregnant only if you have missed your period. Wait for a week after your period is due as it is common for your period to be preponed or postponed by a couple of days in the normal course of events. If you don't start your period, please do a urine pregnancy
test at home. This needs to be done using a early morning sample.
Hope this helps.