Closed to dilated last night and sweep today!

So today im 1-2cm dilated at my membrane sweep. Even though i was closed last night at the hospital. I had sharp, severe, irregular pains and burning in my low low back almost my butt, alll night after the hospital. So that must have got me dilated!! My midwife at my sweep could feel babys head and had to get me to sit on my fists to tilt my pelvis so she could really get in there. Hopefully this does something now!! Midwife doesnt think ill go too far over she thinks i have a good chance of having baby soon !!