hi im 20 years old lady,i had a serious problem,i've bin engaged myself into sex on july ,and i was havin unprotected sex ,then later i have mi periods aftr havn that sex,but i miss august n september for now...and i took pregnant test ,after i miss all those to mnths n i find it negative,please can anyone help...i dont no what to believe anymore cause i doesn't even experience any changes can b related to pregnancy