Suggest Safety Precautions After Having Unsafe Sex

Hi, I was wondering if I could potentially get pregnant if my boyfriend fingered me. You see, he had masturbated twice before coming over... He had adjusted himself about five or so minutes before fingering me. He said it was also extremely likely that he had brushed him hand against blankets and the couch. I m really scared... I also never took day after pills because I hadn t thought that I needed them It s been a week since this has happened, so what are some early signs I should be weary of? Is there any advice you could give me to keep this from ever happening again?? What is the possibility of me being pregnant?