Is spotting at 16 weeks normal?

I haven't spotted once this entire time. Not for ovulation, not for implantation, nothing. But now I have salmon/pinkish colored discharge occasionally when I wipe today and yesterday. I've been having dull cramps in my back and lower abdomen but they don't seem the same as when I had them in my first trimester (still aren't painful in anyway)

Vote below to see results!