If the morning urine test is positive, but in the afternoon it turns negative in the clinic, the main reason is that the days of menopause are still relatively short, so the HCG level in the morning urine is relatively high, and the morning urine test will find a positive result. In the afternoon, the HCG level in the urine will decrease, coupled with drinking a lot of water, will make the urine diluted, a negative result. Don’t be nervous, it is recommended to take another test the next day using morning urine. It is also recommended that you go to the hospital to have your blood tested for HCG if necessary, and it is recommended that you have your blood tested again every other day. If the HCG result doubles on the next day, it is very likely that there is an intrauterine pregnancy. It is recommended to go for an ultrasound around 45-50 days after menopause if you are not feeling unwell.