ok I had sex with my ex boyfriend around the end of July.. had a pregnancy test done at the hospital on August 6.. it was negative... could that be right or could it be wrong.. but two weeks later after the hospital I had sex with a different person.... and on August 26 a totally different person....and now I find out I'm pregnant on sept 23 and they say I'm 7wks but not really sure cuz I'm not positive bout my last period I guess sumtime in july not sure so can you help me fogure out the possibly father of this baby with the information I provided??