Hi guys, I have some concerns about masturbation. I don't think my body is reacting 'normally.' For example, masturbation is not pleasurable at all standing up but fairly pleasurable when lying down. When I lie down though I seem to ejaculate less. I dunno if that's a problem. If I masturbate while sitting down, I sometimes feel a pressure in my stomach after ejaculation. It is oddly relieved by burping. Also, I seem to have problems with orgasm. I *** a lot but my orgasm is weak. Sometimes I will get a sense of relaxation after ejaculation but other times I feel nothing, just the *** coming out. I masturbate very little, on average once or twice a month, so I know it's not because I'm doing it too much. And I got my thyroid checked recently so I think my hormone levels are okay. Testicular cancer is probably out of the question as I'm only 21. Any thoughts?