Hi mama! At 33 weeks, some light pinkish discharge can happen, especially after intercourse or a cervical exam, pero para sa peace of mind mo talaga best to check with your OB agad, a few of us mums had spotting din and turned out okay, but mas maayos kung alam mo exactly what's going on, hindi ba? Baka just normal, pero better safe than sorry when you're this far along na.