someone please help???

Ok so I'm on the younger side (I'd rather not say my age) but me and my boyfriend have been doing 'stuff' for a long time, and the other day my parents found out after a doctor's appointment I had that I was sexually active, they didn't know. And since then I can barely even enjoy kissing him. And the thought of sex or anything along the lines of that makes me uncomfortable, does this make me asexual? Or perhaps something else I'm not thinking of?