I started my period 33 days after the last one, it was very light which is usual for me, after about 3 days it stopped. Then it came back a few days after but heavier. No heavy but quite a bit heavier than before. It's been like that for 7 days now. What's going on?! Usually it's very straightforward, light and over within a few days. I had a smear in between this period and the last, would that make a difference?