Okay so I'm supposed to be induced Tuesday, but Dr says he doesn't think I'll make it until Monday.…

Okay so I'm supposed to be induced Tuesday, but Dr says he doesn't think I'll make it until Monday. I'm 4cm and 100 percent effaced. I've never went into labor by myself!! I've had a couple of BH contractions this morning and I got super nauseous and actually threw up. But now I'm extremely sleepy. Like it feels like I've been drugged. Has anyone else ever experienced this? Just yesterday and the day before I was buzzing around nesting like crazy. I hate not knowing what to expect.