in august i had sex with my ex on the last day of my period and for the past two months my periods have been light. Ive been on birth control for 2 years, he never fully penetrated me, he didnt have a condom on only when he was rubbing against me when i had my leggins on, when he rubbed against my vagina he did have a condom, he ejaculated in my mouth, and i have not had morning sickness. Do I have anything to worry about?