hi, i am extremely worried that i may be pregnant. i am 16 years old and had sex more than once roughly 3-4 months ago. a condom was used during intercoarse all of the times. i have never really had a flat stomach but im worried that its becoming bigger, but that may be my imagination. i have had my period twice after intercoarse occured and am due to have my period again soon, but lately my belly has felt swollen and the skin on my stomach feels extremely senstive and tingly to touch. i have also been feeling a strange sensation in my stomach for about the last week or so. could u please tell me how possible it is that i may be pregnant or if these symtoms are common to mentruation, i desperetly need your advice.