How to know if you a lesbian

Maria
Ok I know this sounds like a stupid question but at 33 I'm still confused. 
So I like girls, I find them super attractive and can get quite easily turned on by other women. When I fantasise it's usually about a women and when I watch porn I'm more interested in the girl than the guy. I have only ever slept with one girl though and kissed two enjoying both 😉
The thing is I can also appreciate a good looking guy and have slept with a couple and had two beautiful children. I have been attracted to guys just not so many and in all honesty I don't like men's bits so much and would never give a bj.
I know I shouldn't have to define or label it but I feel stupid that at my age I'm still not sure what my sexuality is 😬
Any comments help or opinions welcome but please no judgements xx