Yes, it's called biphobia. It's similar to homophobia, but focuses on bisexuality.
Also, in general, if something exists, there's probably a phobia of it. What you're more likely to see, though, is bi-ignorance -- straight people who "just don't get it" and gay people who say things like, "You're just gay and afraid to admit it."
I don't think there's a true name for the phobia, but it is an actual phobia, and about 250,000 Americans suffer from it. It's not homophobia, because that's a prejudice term for one hating a homosexual I believe. Some people just call it "Being Gay Phobia." If you obsess over the thought of being gay, and you can't get it off your mind, and you suffer from anxiety and panic attacks constantly, it doesn't mean you are gay. It's just a fear of becoming gay. You might want to get help from a psychologist to sort things out if you are a sufferer.
Homophobia is the phobia related to the fear or being a homosexual. It is also used to describe the discrimination of homosexuals.
Homophobia.
Yes, the phobia of being laughed at does exist.This phobia is called gelotophobia.
Social Phobia is the phobia of embarrassment. It is the phobia in which a person is scared of being bullied.
Social phobia includes the fear or phobia of having no friends. Individuals with social phobia have a strong fear of being judged by others and of being embarrassed.
There is not a technical term for a phobia of being alive. There are phobias of being buried alive if that's what was meant.
Hypnophobia is the name of the phobia relating to the fear of being hypnotized or in a sleep
Indeed the fear of relationships is a recognised phobia.The phobia of being in a relationship is called Philophobia.
Social phobia or social anxiety disorder
There does not appear to be a phobia term for the fear of being confused. However, phobophobia is the fear of being afraid.
Socianthphobia
Agrophobia
Efkatalipsiphobia
Autophobia