To interpret dreams accurately, you must have a deeper understanding of your life. So, you are the best dream interpreter. I guess it's nonsense to say it wrong. I hope you can be inspired by this and know yourself better.
You are probably still a student, and your sexual psychology has sprouted. Dreams actually indirectly imply some desire or some emotion. The symbolic meaning of toilet paper in your dream is "sex". The action of "eating" proves that you have sexual needs. Taking toilet paper as a substitute, you feel sick, which shows that you are trying to suppress your sexual desire. Maybe it's the direction of your sexual desire that makes you feel guilty, or it's your ignorance of sex. Or you have had sexual experience and tasted it ("not bad"), but its unfairness worries you, such as sexually transmitted diseases (nausea)!
Hehe, it's sheer nonsense, don't take it personally!