Patient :Hi. My girlfriend and I last had sex on October 4th and she was on the pill. Two days later, she had a period which lasted only one day and no periods since. She took a home pregnancy test last friday which turned positive, a second one yesterday which turned negative and third one today which turned out to be negative too. I would like to know if she is pregnant or not as we got on positive test followed by two negative ones.
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I understand your dilemma completely. If she had her periods on Oct 6th and 2 days after you had sex, and since then she hasn't had her periods. She is already 3 weeks over due. If her first pregnancy test was positive done a week back but the next two done yesterday and today are negative , then it is difficult to explain. either the brand of the kit is not reliable or the kit has expired.
However , the best way to find out would be to get a transvaginal ultrasound done by a physician to rule out of confirm any gestational sac inside the uterus . Also you may opt to do a blood serum hcg test which can detect the hcg levels , which should be notably high if your partner is pregnant.
If the pregnancy is ruled out by ultrasound then she may opt for a withdrawal bleed with progesterones in consult with physician to resume her menses.
I hope i have answered your query in detail.
wishing you good health,
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