hey i m 18 years and engaged.my periods is always regular.i hv an oral sex wid my fiance on 30 may,just oral sex and we both are not undress but my pant is wet from his fluid.and my hymen is not broke so is this possible to get his sperm in my uterus or cause of pregnancy ? so after that my period date is 10 june and i miss it..now it 22 days late and i dont get my periods,now also i hv headache,back pain,too much abdominal pain and breast pain..i m not feeling well.i want to know why this is happening ?? how can i get my periods starts back ? and please also tell me how to stops those pains ? i m worrie please help me fast thankxx..