Thanks guys! I appreciate your comments. I went to the doctor this morning and she said that it could have been implantation spotting and during the orgasm the uterus could have expelled the blood during the contractions, but not to worry too much about it. I haven't had any spotting or cramping since....and she said everything looked normal in there, and that sex during pregnancy is not harmful at all, so I am feeling a lot better about it now, although now I don't think I will have sex or an orgasm for awhile just to be on the safe side & to keep my mind at ease! God knows I am turning into a basket case from worrying so much...I have to learn to relax & enjoy this pregnancy!!!
Thanks again for your replies.