Talk to Gynecologist on Missed Period

Mera cycle 28 days ka hy sometimes 30 days hoty.is dafa 7 days late hy period.30 day k hisab se b 5 days oper ho gy.3,4 din se meri kamar or lower abdomen main pain hy.neend b boht ati hy.kiya yeh pregnancy ho skti hy?