myself and my boyfriend moved and rubbed all over each other and we were on clothes both of them and i have a doubt that some of his semen has entered into me through the clothes and at that time i also had some orgasm. i dont know has it entered or not and when this is done i'm on my periods.right after 14 days i had vomiting( think so due to indigestion) and headache and i had increased amount of orgasms daily. i'm in a confusion state.please clarify my doubt.am i pregnant?