Bleeding at 33w

What could this be? I’ve already been to L&D once with pink spotting and her and my midwife at a later appointment said it was fine unless red blood. Well tonight I had a small piece of red blood on my underwear and a small amount fall into the toilet. I’m hesitant because everything was fine at my last appt, and I live an hour away from L&D.

What should I do?