hello i am really worried and looking for answers i am having a miscarrage and i am 4 weeks due september 29 2013  i started bleeding pink so i went to the hospital doctor took urine and blood test came back positive pregnant they did a ultra sound  and they couldnt see my baby....that was yesterday and now i am bleeding red dark with clots sorry for the tmi i am just worried and i think i am miscarring ...its my husbands first baby and my third ..and we want to try again if this is a miscarrage how soon do you think we should and is it ok to have sex and try again??  we dont want this to happen again