My last period was on 26 april 2018, that lasted 5 days. I have taken 3 hpts (30 may, 3 june, 9 june) and the last one was on 9 june, which along the previous ones was negative. I underwent beta hcg and tvs ultrasound which was also negative. However ny gynaec found an infection and gave me microdox hbx and vizylac for two weeks. Now my doctor checked everything from prolactin, thyroid to insulin and when everything came out normal, prescribed me duphaston 10 mg for five days. I took it from 11th-15th june. I do not have any pms symptoms till now apart from slight nausea, mild joint pain in legs and arms, and mild upper abdominal pain. Also in ultrasound it was clear I do not have any pcod. Upper abdominal pain on 16 and 17 Mouth tastes like I have fever, weird taste Nausea specifically in the daytime Mild pain in legs and left hand joints what could be the reason for delayed periods even after duphaston? Please help.