Lots of big clots during my period

My periods are always regular, this month it came 5 days early! Started off really light for a day and a half then got slightly heavier at the end of the 2nd day but with lots of big clots. I know it’s normal to get clots during your period, and normally mine are quite small and not that many. This month I’m getting loads and quite big and some long and I’m now on day 4 and still getting them and still on a bit heavy, which isn’t normal for me on day 4. Has anyone else experienced this and I’m slightly concerned