Please reply!

Had unprotected sex a few times from the 6th of june to the 12th of june. Had my period scheduled for the 6th of june but i was flying that day and then it ended up coming on the 12th of june. Had a normal period it was just a week late. Normal cramps everything. Now its july 2nd and my period is due on the 14th i have bloating, constipation, nausea, a lot of burping and etc. btw.. i flew to la from dc and then back to dc and thwn five days later flew overseas. Is it just a stomach issue u think or am i pregnant. Im foing to take a test in the morning but please help me out with an answer...