Hi,Pls could I possibly be pregnant?I had my last period on 01-09-2013,n it lasted for 5days n I had sex on 06-09-2013 unprotected, bt didn't take contraceptive rather I took a laxative herb. Dat caused a little purge,den after a week plus I had sex again n took postinor 2,later after like another week I had sex n took another postinor 2,my circle is 28days n am yet to mensturate, its already month end,though I have done a urine strip test dAt is negative bt am still nt sure becos am having some pregnancy related symptoms...like..morning sickness,nausea n d likes....pls Doctor is it possible Iam pregnant????