How do I know if I'm asexual if I never had sex?
For context, I'm 19F and never really thought about my sexuality growing up, and never had a crush. I didn't really care for dating and having a bf/gf. Now that I'm in uni, I'm beginning to wonder if it's normal (for alloromantics and allosexuals) for a 19 year old to not actively want a relationship. I thought I could be asexual, but how would I know if I never tried sex? Though, the thought of myself doing sex things with another person kinda makes me uncomfortable. I occasionally get turned on when reading smut of a specific ship, but to imagine myself having sex is... I don't wanna imagine it.
For romantic feelings, I really don't know. I don't even know what gender(s) I like. My only romantic experiences are 1. when a guy friend said he liked me in elementary school, and while I was flattered I didn't really care; 2. when I dated(?) a guy during high school after being friends for a year, and while I really liked the guy, when he sent a dick pic (I had consented) it was... idk, not sexy at all. I don't seek out or wish for a romantic relationship, but idk if I'm missing out. I'm not opposed to holding hands/cuddling etc. I read about queerplatonic relationships and that sounded nice.
Is it too early to say that I could be asexual / not alloromantic? I know asexuality is a spectrum but having a general label could ease my mind a little.