it's long but I really really need advice. help me?

Alexandra
Okay so here's the backstory. My boyfriend (frank) and I have been dating for almost a year and a half. I'm a virgin and he's a virgin.  I've have some experience with other guys but I'm his first everything. 
So. About two weeks ago I was at his house and he had read something online about eating a girl out. He told me he wanted to try it. I'm not really into getting eaten out. I guess I haven't gotten it done right or whatever but it doesn't really do anything for me. But I let him because I love him and hey, maybe I'll like it? 
Not even a minute in I feel his fingers and I get a little excited caus shit he is good with his fingers. Off track. But then he says "baby you need to wash yourself I think you have discharge here. " (I talk to frank about everything because he likes to know as much as possible so he knows a lot of girly shit)
 
Immediately I just kind of shrink in on myself. Mentally and kind of physically. He noticed and we talked about it and he still feels bad for like how he said it and everything. But I feel like I won't be able to show my body to him for a while. And I really want to take the next step with him but I don't feel comfortable in my own skin anymore. Am I being unreasonable? Am I over reacting? How do I get my confidence back?