Was that my water breaking?

I'm so confused right now.... i'm 38+4, just had a membrane sweep yesterday. Tonight i was squatting down to insert 4 evening primrose oil capsules. They all burst as i was inserting them, but then i got a gush of fluid as well. It doesn't smell like urine. It is slightly yellow tinged, but i think that is from the primrose capsule contents. How do i know if that was my water breaking? It's important that i know because i'm group b strep positive so i need to head to the hospital asap if it was my water. I tried walking around and squatting and no more water came out. It wasn't as big of a gush as i would have expected. Experienced moms please help!