Different types of contractions-gctid6851

So recently I've started to question whether I am doing the right contractions.

So what types are there?

I know there is a pc contraction and an anal contraction. Are there any more?

So I can't figure out the difference between these two. The contractions I do, involve me pulling up with my penis. Does that make sense? Haha like I put more blood into my penis making it harder instantly. When I do these the aneros is pulled up into me. It seems like the penis contractions that I'm doing are simultaneously "sucking in" with my rectum. So which contraction am I doing? And how do I do the other one that I'm not doing? I can't seem to figure out any other Contractions that I can do. Seems like the one I'm doing is the only thing I can do. People say that PC is the contraction stopping the flow of urine. I'm going to need to go pee before I can figure this one out.

Whatever contraction I'm doing, I'm getting small 2-3 second where my anus pulses with the aneros.