Is labor soon

Cindy

So I had an appt today at 36w3d, they monitored me and I'm having contractions every 3-5 mins but my dr said they're not strong enough to dilate me. I'm still only 1cm dilated. She did say his head is very low and doesn't think I'll make it to 39 weeks even. I started bleeding after the appt but I'm not sure if it's my mucus plug or just bleeding from having my cervix checked.

Has anyone else gone into labor soon after having those kind of contractions? They're getting a bit more painful definitely feel like strong period cramps.