I have been reading about the technique where you reach orgasm without ejaculating so you can keep going by strengthening your pc muscles. The last two times I masturbated, I tried clenching my pc muscles really hard as I reach orgasm. Basically what happened is at first I didn't feel the same feeling I usually feel when ejaculating, but some semen still came out. When this happened, I just let it go and felt the same feeling as usual, but the remaining semen didn't seem to come out. So basically I didn't let out all the semen I had. But after this I still went soft and everything like after ejaculating normally, What exactly happened? And is it ok to do this or is it harmful in some way? I read something somewhere about retrograde ejaculation and it sounds like that's what happened.