I was on birth control pills and the shot for 3 years and about a two months ago I started regaining my menstrual cycle back. After engaging in sexual activity with my boyfriend. My period is a month .. almost two months late now. I took multiple pregnancy test and most said negative, but I be having pregnancy symptoms like nausea, back pain, cramps, cravings. Do you think its the period talking or could be a real possibility I'm pregnant?