I don't know if I'm bi, or just curious?

I'm 21f and for the the longest time thought I was straight. Or at at least did not question it. Found guys attractive and had a few crushes but never a serious relationship. Since a couple of years though I'm beginning notice women and pretty much fantasize.

Hadn't thought much of it until very recently and I'm confused af again. Ive begun to kinda just be attracted to women. Watched porn for the girl/s a lot of the time too lol.

Lately though I've even thought about what it would be like to actually have a relationship with a woman. But the thing is I live in a very conservative place and even the thought of my family finding out is scary so I'm kinda stuck? It doesn't help that I have major social anxiety. Also that I never really had a proper crush on a girl. I don't know if I need to experiment to find out or?

Calling myself straight after having these thoughts doesn't seem appropriate sometimes. But at times it does. I'm nervous about the implications too aka the accepting and coming out (which is pretty much out of question). Sometimes I even feel like this is fake and I may "snap" out of it ://