Will you get a disease if you swallow your semen?
If you swallow your own semen, then no, you can't get anything new. It's quite safe.
It's fairly safe, too, to swallow someone else's semen.
Sperm (semen) is mostly protein and full of other nutrients. There is no reason not to swallow it, and several studies have found some health benefits to swallowing semen. However, no person should ever be forced or pressured to swallow semen if they do not want to. Like anything else you put into your mouth, if the semen comes from a person who is infected with a disease, you can catch the infection through swallowing…