Personal question about uality/psychology.?

I'm a 16 year old male and I have always found girls attractive. I have fantasized, dreamt, thought and had crushes on women. However, I'm very shy and don't have much experience in dating. Anyways, recently I have been sort of depressed, you could say. At first, I kept wondering if I was gay or if I liked guys. I know I like women because I fantasize and masturbate about them plus I'm sort of a . Anyways, recently, I'll see the littlest thing (man's on tv) and think that I'm gay. I don't even like it, I just think I'm gay. Recently, I've been thinknig if I have a problem or something because I always wonder if people think I'm gay or if I am or what would happen to me if Iwas. I don't want to be and I love , but even when someone says "Geez, you're so gay." as a dis or insult, I take it seriously and question my uality. What's my problem? Can you guys help me? Please take this seriously, the issue