I've been on the minipill for 18 months now and this last month is the first time I have had bleeding, 14 days after AF and for 4 days. It was light on Day 1, then heavy and thick/clotty for 2 days and then light again for one. Now I've got AF again 15 days after that when I would normally get it. Could the minipill have caused this, even though it didn't happen for the first 17 months? I got AF back when DD was 13 months btw.