Couldn't sleep last night, had some painful contractions but they weren't consistent. Been up since…

Couldn't sleep last night, had some painful contractions but they weren't consistent. Been up since 3:30 because of it. I just don't feel "normal" my stomach is upset and feel like I need to throw up. Lost part of my Lucas plug. Hoping this could mean labor is near? I felt so good the last couple days before this. Anyone else feel like this then go into labor?