Does anybody know what this is?

I was admitted to the hospital 2 days ago for contractions. I’m only 30 weeks and was dilated to a 2. They were able to stop the contractions and now I’m on bed rest. I’ve been given medication to take every 6 hours to control contractions but when I went to the restroom I noticed this. Is this normal? I just want to get other opinions before I make a trip back to the hospital. No contractions