On March 21 I had unprotected sex for the first time in many years (we did not notice that the condom was broken). It was the day after the last day of a normal period (bleeding stopped on March 20). It has now been four weeks and every night before bed I get a bitter taste in my mouth, and I feel nauseous and gassy. I have had what I believe to be a period that started on April 10. What is troubling is that I have read that it could have been vaginal bleeding rather than an actual menstrual cycle. Per the article, the fetus attaching to the uterus wall causes some women to have vaginal bleeding. I am 47 and about to be a grandmother for the first time; so I am a little frightened, but still excited. I just want to know the odds of getting pregnant a day after your cycle stops and at 47 years of age.