I just started taking Loestrin24 about three weeks ago. In the middle of the second week I (stupidly) forgot to take a pill and within two days had started a very light, semi-crampy period-type thing. So in other words, this is my second period within 3 weeks. The bleeding has lasted about 4 or 5 days now and I was wondering if I should be alarmed or if it's because my body is just getting used to the new pills? I got caught up on my pills next day. Can anyone help?