Periods or worry?

I'm 33 soon to be 34. I had my last period 12 days ago and now it has returned again but feels a little different this time. I did have my appendix removed on easter sunday so i figured maybe meds and operation have something to do with this irregularity but my husbandand I are also trying for a second baby...so it has been pinky coloured but has lasted longer than 1-3 days and it's too early to test. I'm just a bit confused but hopefully my body sorts itself out?!?