Help me pls

ba

I’m 37 weeks, 2.5 cm and lost MASSSSIVE of plugs just in a day. I went to shower around 12:30pm, tons of thickest plug was all over my underwear. At around 3pm, tons of thickest huge plug again on my undies. At 6pm, it happen again just like at 3pm and then at 10pm I pulled my underwear down and then this plug just somehow hang out of my vagina so I tried to pull it out but bam!! It won’t stop coming out tons in the bath!!! I keeping pull it out for about 20-30 times, I decided to give up and leave it out.

What the hell is this mean?! Is it mean I already am more then 2.5cm and lost control of plugs? It’s my 3rd baby and never experienced this lots of plugs in a day/short hours..also, since the day (3 days ago) midwife checked my cervix and then I felt cramps irregular for 1-2 hours (last 30 sec or 1 min), then stopped and came back. Repeat like that for three days so is it mean my body trying to get contractions slowly?