Hi Jay27,
I'm glad that resource was helpful for you to begin to understand what you are and are not comfortable with during sex. For your question about what to do with those things in the maybe category, those could be things that you might want to discuss with your partner further to see what their thoughts are about it, you can express what maybe interests you about it, but also what some worries you might have are. Then together you can decide if that is something you might want to try or not and then check in again to see if you want to do it again, change something, or if it didn't work for you.
Specifically, about your experience with oral sex, it sounds like you have done some reflecting and that right now there is something about it that might not feel right for you, even if you can't exactly put your finger on it. It sounds very reasonable to take a little more time to decide if you want to try it again and not to force yourself to do something that you don't feel certain you're ready for. In addition to the article that Sam linked above we have this article which can be a good resource to help you further decide what you do or do not feel comfortable doing and why:
Ready or not?