I drank a castor oil smoothie here’s what happened

I had my 39+3 check up yesterday and told my midwife that I couldn’t drink the midwifes brew recipe she gave me the week prior due to the flavor ( I felt like I was licking perfume off a body) 😂 and everyone be nice!! Because I know castor oil gets a bad rep, so no negativity please !!! ....anyways yesterday she said it is a weird combo of ingredients so let’s try just mixing castor oil into a smoothie or milkshake , something thick to mask the oil. Done. So I made myself a smoothie , got it all down within 1/2 hour .... still didn’t taste great but was better than brew concoction. Within an hour and 1/2 I started to get contractions . YAY awesome ! It’s working ?! The contractions were definitely uncomfortable but nothing too unbearable and this went on for HOURS never got any more intense but were kind of ranging from 5 mins to 13 mins apart and not lasting long maybe 45 seconds . I was thinking hmmm this early labor ? Anyways long story short I had contractions from 7pm to around 1am then all the sudden. Gone. They stopped . 😐 I’m getting discouraged every time I get a contractions with or without the castor oil drinks I’m thinking omg could this be it ? And it’s not and it’s messing with my emotions 😞. Anyone else have a similar experience where they lasted that long just to stop and nothing came of it ?