Signs of labor?

What were your signs of labor? I’m 38 weeks. I got induced at 37 weeks with my first baby so I don’t really know what to look for. but for the last couple of days I’ve been really crampy almost like period cramps and super nauseous. At my last appointment I was 2cm dilated and 50/60% effaced and she could already feel babies head, he’s super low. If I don’t go into labor by the 28th I’m scheduled to be induced that day.