Confused and worried

Bre

I'm currently 32 weeks pregnant and this afternoon I found a spot of blood when I used the bathroom and it happened again 2 hours ago talked to my doctors they said go to L&D if it gets worse. Now I'm having what I believe is braxton hicks because my entire lower belly is constantly getting tight and I'm nauseous as can be. Does anyone have any idea if this is just 3rd trimester?