For the 6 days I have vomited every single night around the same time between 11:00 and 11:30 at night. My boyfriend is convinced I'm pregnant and its "morning sickness" at night. For the past 7 months we have been sexually active. We have both been checked for STD's and since we're clean and on birth control we don't use condoms. I'm on the implant birth control in my arm that is 99.9% effective but my boyfriend has already gotten someone pregnant on the same birth control, because he has high testosterone. I'm thinking its in my head but could I be pregnant or is it something with my gallbladder? I'm planning on going to the doctor tomorrow, but any ideas on what's wrong?