on 5/29 dere mite of been a chance some sperm could of gotten on me. but i stil havent had sex. da tip juz went in a lil . but like 5 days later i got my period for about 4 or 5 days. on 6/10 i took da birthcontrol shot . its been over a month 7/22 and i havent gotten ma period . is this possible? . i cant be pregnant rite?. ma period usually is 7 days . n this time only 4 or so . and ive been having very strong pains in ma lower n upper stomach. i have nausea everytime i eat. and its hard to go to da bathroom and do number 2, i go once a week . are this side affects of da shots? or can i be pregant?