Uy mama, I know it's scary when you see something unusual like that! Please message your OB or go to the clinic as soon as you can, kahit bukas lang, para ma-check agad. Don't wait, okay? It's better to be safe at 32 weeks pa lang.
I had a friend who panicked din about discharge changes mid-pregnancy, and her doctor just did a quick check, turned out fine, but grabe ang peace of mind after. Definitely don't worry alone, let your doctor know right away so they can tell you exactly what's normal for your pregnancy.