My boyfriend and I were both just wearing underwear and dry humping. I do not believe any penetration was made. I was on my period during this time and it started the Monday before and this happened on that Friday. On the following Sunday I started to bleed more and still am today, on the following Tuesday. I have also experienced light nausea and cramps and sometimes feel light headed. I am also on the lowest dose of birth control. Is there any risk of me being pregnant? I'm freaking out.