IV pain meds during labor

I'm 31 weeks and I know I want the epidural for sure, and I was thinking about doing IV pain meds as well, but my friend just had her baby and got the IV meds and said it made her super high and she was tripping hard. I've been high and tripping before and it's no fun.. Never did drugs again lol. I don't want to be "tripping". How many of you ladies had good experiences and bad experiences with IV pain meds