Spotting/light bleeding when I shouldn’t be

I’ve been taking my 90-day birtchcontrol

pills perfectly for the past two cycles. For the first 90 days I used them, I had light bleeding for a month before I took the week of placebo pills. Now I’m on my second cycle of 90 days, and it’s gone perfectly except I’ve been having spotting/light pink bleeding even though I didn’t change what time I’m taking my pill. Should I listen to my body and take my placebo pills now instead of continuing to take the “regimented” hormones, or should I just continue with the normal plan? Any advice would help!