Men that i was once attracted to i now find unattractive. I don't know if I'm now attracted to women

So awhile ago i watched porn and found out i was turned on by lesbian porn. I was worried but did research and found out that it's completely normal. Yet, a few months later "questioning thoughts" started to appear. I have never felt emotionally or sexually attracted to women. I have admired or found women gorgeous but not in that way. Men that i was once attracted to, i now find unattractive :/. There is times where these questioning thoughts go away ( when this happens my attraction for men come back) and i feel completely normal, but then the thoughts come back (my attraction for men go away again). I just don't know whats wrong with me. I'm honestly stressed tf out. I have always pictured myself with men and i don't think i'd ever be with a women (in a relationship or emotionally involved). I mean before these thoughts started (around aug. 2017) i had a crush on a boy (around spring of that year). Can anyone help explain what's going on with me? When all of this started I would always "check" if I found this person attractive or that person hot ya know? Now, not so much... I'm just honestly fed up. (I'm a female)