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Unprotected sex, chances of pregnancy, 2 test positive, 1 negative - Online Doctor Chats

Date : 21-Feb-2012
User rating for this question
Very Good Posted in: Pregnancy
Answered by

General & Family Physician
Practicing since : 2009
Answered : 681 Questions
User :   I had sex witout condom little over a month ago. 2 days before that night she had just finished having her period. I also didnt ejaculate inside and we didnt have sex for more than 20 minutes. She also took a PLAN B ONE STEP pill the day after. She also has been takin medicine for her anemia. She says it has Erythropoietin and that it also has estrogen in it. She took 3 pregnancy tests today. 2 were positive and 1 negative. What are the chances she is really pregnant?
Doctor :   Hi
User :   hey doctor
Doctor :   May I know when was her last menstrual period?
User :   she said she had it last week, but that it was strange because she had it for less amount of blood than usual and that it went away and came back 2 days after
Doctor :   Does she have any other symptoms of pregnancy such as nausea, vomiting, increased urination, mood fluctuations, breast enlargement, breast tenderness?
User :   no, she has been pregnant before and she knows those symptoms, but she said she doesnt have any of those
User :   she says she is almost 100% sure she is not pregnant
User :   im the scared one here lol
Doctor :   Ok
Doctor :   Were her periods regular in the past?
User :   but i dont understand the 2 positive tests u know
User :   im not sure, she isnt with me right now, but she told me it was first time her period came, went away for 2 days and came back, but in low amount
Doctor :   Ok
Doctor :   Let me explain to you.
Doctor :   Based on the history that you provided - sexual intercourse was a few days after her period and according to the calender method of contraception,
Doctor :   her chances of pregnancy is extremely rare.
Doctor :   Having said this, without physically examining her/ultrasound scan, I cannot explain the reason for the 2 positive pregnancy test.
Doctor :   Theoretically, the following may be responsible for the false positive results
Doctor :   1. The test were interpreted wrongly
Doctor :   2. She may have been pregnancy which could have aborted
User :   she has had 2 miscarriages before
Doctor :   These 2 are the possible explanation for the positive pregnancy test reports.
Doctor :   The best method of detecting what is happening is by gettng an ultrasound scan.
User :   i know its not 1, because it was a + sign, and for what i understand thats a positive
User :   what would u think are the chances of gettin pregnant considering we had sex 2 days after the end of her period, that i didnt ejaculate inside, and that she took a PLAN B pill the day after?
Doctor :   Practically the chances of her being pregnant are nil.
Doctor :   But apart from those 2 ( mentioned above reasons)
User :   do u think those medicines with Erythropoietin or whatever may have influenced in a false positive twice?
Doctor :   I do not find any other obvious cause for the 2 positive reports that you got earlier.
Doctor :   There is no significant reports of erythropoietin or oestrogen inducing false positive pregnancy test.
Doctor :   However oestrogen pills and other hormonal pills can cause false negative pregnancy test.
Doctor :   This doesn't mean changing a positive to negative report.
Doctor :   Based on previous studies, and by what you have said, the chances of her being pregnant is very unlikely.
Doctor :   I would suggest you to opt for ultrasound test or a physical examination
Doctor :   to look for possible signs of abortion
Doctor :   if the test were interpreted correctly.
User :   so based on what u know, she is not pregnant or she might have had a miscarriage and still showed up as positive right?
User :   yes, shes goin to get checked on friday
Doctor :   * I mean, if she has symptoms such as persisitent
Doctor :   menstrual irregularities,
Doctor :   other symptoms of pregnancy
Doctor :   then evaluation consisiting of ultrasound test is needed.
Doctor :   To put across in simple words,
Doctor :   the practical chances of her being pregnant is less than 2 %
User :   thank you :)
User :   take care
Doctor :   And so, the tests to look for abortion is needed.
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