I have 2 years old child feeding through breast. My periods are irregular for last few years and generally comes 10-15 days late every time. But this time I missed 2 periods. My last lmp was 12.02.2019 and I have no period till 21.04.2019. I did 1st upt test on 30.03.2019, 2nd upt on 9.04.2019 and 3rd upt on 17.04.2019, all three are negative. I cannot understand the problem why it is going on. Is there any chance of pregnancy even after doing 3 upt tests which are negative? Or some serious problem exists behind this amenorrhea? Please suggest me some medicines to treat this disease.