pelvic pressure

2 days ago started leaking clear fluid enough to soak my underwear then yesterday I saw blood when I went to the bathroom. Only one time though, and accompanied by pelvic pressure. Called L&D and they suggested to come in to make sure it wasn't my water leaking or breaking. They tested the fluid and said it was normal, checked on my placenta which is low lying and checked on baby boy, he was head down causing the pressure in my pelvis. I'm only 21 weeks so it was scary to hear he was head down already. But everything checked out as okay, cervix is closed and thick.