 [ Symptoms ] sex in july i have had period every month on time since then i have taken 3 pregnancy tests all negative am i being paranoid can i still be pregnant i am really scared i would be 15 weeks along if i was regular period nausea anxiety cramps paranoia bloating fatigue dizziness hazy stomach pains constipation yeast infection at the beginning of every period [ Disease ] i assume you are referencing an air contract barium enema which is a test for the colon the link has more information about the test