During the month of November I unknowingly missed a birth control pill & found it while cleaning but do not know when it was from. Roughly a week after finding it (November 28) a condom broke. I had taken 2 of my iron pills of my pack and started my period the next day. I began experiencing dull breast pain roughly December 8th but haven t noticed any changes in my nipples. I have also been having very dull aching pains in my stomach that come and go. I also have been very very stressed about the incident and was wondering if it is pregnancy or due to the extremely high level of stress. I am due to start my period December 26th and am very worried, i have been on birth control for almost 5 months now and have been told I should be fine but would like another opinion as well.