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why the urine test is negative? It was positive..worried

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I have 36 years old and it is my first pregnancy.My last period was August 15th.I missed period and tested after 10 days of expected period(exp.period s sep 15) got positive.Doctor told me to scan on october,20 days after missed period.But result is negative and asked to repeat after 2 weeks.And urine test is also negative.But they used the afternoon urine sample.What I have to do?? Why doctor told me to scan on 20days after missed period? I heard scanning will do after 3 months.Is it right?I am in very confused stage.I did use duphastone and he told me to stop that. why the urine test is negative? It was positive..Give me solution.I am worried...

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replied October 5th, 2013
Getting Pregnant Answer A44949
Welcome to ehealthforum,
Sometimes you can keep getting false negative results in tests done with urine pregnancy test kits during early pregnancy as the kits are calibrated ones, so unless the hormone levels in urine reach a certain level, they do not show positive results. Urine pregnancy test kits usually start showing positive results after about 18-20 days post-conception (roughly corresponding to about 1 week after your missed/altered periods). The test should always be done on early morning first urine sample to get accurate results (pregnancy hormone HCG is believed to be in highest concentration in this sample, and you should avoid lot of fluid intake and caffeinated beverages in the night before taking the test). Wait and watch for your periods. Look out for development of any other new symptoms if pregnancy is suspected. If periods do not start within 10 days of expected period dates, or if you get abnormal periods, or if you suspect chances of pregnancy, consider visiting your doctor/gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Ultrasound scan done very early in pregnancy can also fail to detect fetal heart beat which usually becomes clear after 6-8 week gestation (fetal age, and not the time from your last periods). If pregnancy has been confirmed, you should consider getting serial HCG levels checked to see if the levels are rising adequately/doubling up within 48-72 hours confirming that pregnancy is going smoothly. If HCG levels are not adequate, then external hormonal supplements would be considered to be started to help you in preventing miscarriage. Repeat ultrasound scan done after 2 weeks will also help to confirm the gestational age and pregnancy viability. Visit your doctor/gynecologist at the earliest for further evaluation and assistance. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet. Look out for danger signs like increase in intensity of abdominal cramps, increasing back pain, fresh bleeding etc. Avoid bending or lifting any heavy weights and avoid heavy work. Avoid standing for long duration and avoid climbing stairs. Avoid use of caffeinated and carbonated beverages.
Take care.

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