Had my period July 2 2010, last til July 5, had sex July 8, July 10,July 13, July 15,and twice July 17. ovulation July 18 then sex again July 22, July, 27, then on July 29 brightred lightl spoting a pad for 3days. My Question :Was This my period for Aug because i was due to START my period on Aug 1,2010. or am i prégnante with a due date of April 8,2011 Also heavy bottom , small cramp right side 47yr

Please help
:-)