Assuming by healthy you mean disease free, then no you can't get a STD from another healthy person.
No.
It the person has an STD you can get the STD sexually transmitted.
Settle down with 1 person you know will be faithful and has no STD.
No. It will not unless the person has an STD.
By unsafe sexual intercourse.
STD's and ulcers are not related. That is not to say a person with an ulcer could have one. But so could a person without one.....
Depends on what you mean by "it". The germs that cause STDs don't know if you're gay or straight, male or female, so a gay person can get an STD from any sex partner who has an STD. But if you're asking if a gay person with an STD can make another person gay, the answer is No. Being gay isn't a disease.
A fit and healthy person
It will come out after a time from your anus don't worry will be easy I tried it
what are some benefits of having a healthy person
A mentally healthy person is safe
a healthy person eat fruits and vegetables