I think I'm starting contractions, this morning I had lower abdominal…

I think I'm starting contractions, this morning I had lower abdominal pain, just pulling and that's all, thought it was false like in previous times, after some time started to discharge as egg white, but not much, the pain didn't subside and around 12 o'clock on my underwear I saw a huge chunk of mucus, not like usual, but really huge, the pain gets stronger, seems like this is it...