Having contractions but only 1cm dilated

j

I went to l&d last night because I was having bad back pain, crotch pain, and throwing up a lot. They told me I was definitely having contractions but I was only 1 cm dilated and they sent me home. I continue to feel contractions here and there but feel better than I did last night. They didn’t give me much insight and just sent me home and told me to go to my dr tomorrow on Monday. Am I close to labor? In labor or what’s going on. My family and friends said they had similar situations but were kept and delivered a couple hours later so idk what’s going on. Did this happen to you? I’m 40 weeks today