I've been on the mini pill for many years. Very rarely bleed while on it. Just changed doctors who have given me a different pill which is apparently exactly the same ingredients. Half way through my second pack now. Last Friday I started bleeding for a few days, probably stopped Tuesday/weds. Just woke up and it's back. They're so much heavier than ever before. Only last month I had a smear which was fine. Do I need to be concerned? What's going on, I get a panicked with things like this