Leaking boobs?

La

I’m 16 weeks, and before getting in the shower tonight I was doing my nightly ‘check’ and I noticed some dried bits of yellow stuff in and on my nipples, there wasn’t a lot, but enough for me to notice

Is this normal? My nipples have been just a little itchy lately (not frequent though) but I figured that was just a symptom of pregnancy, and I haven’t noticed anything leaking before tonight