couple of newbie questions: super-o pushed it out, tingling feeling

I got my first super-o last weekend

Congratulations on that!

1. my question is ... the super-o pushed out my massager,it felt like i pushed out a poo but it was only the massager. is it normal? does it happen to you?

This happened a few times for me in my early months of use but as my muscles developed strength, stamina, control and tone, the incidences pretty much stopped (fallout may still occur if I'm standing and relax my anal muscles). The question "is it normal" (as opposed to abnormal?), I would say, yes, it is normal for newbies to experience this phenomena until they have strengthened all their pelvic floor muscles.

2. second question is: when the massager is inside me, i think it is touching the prostate, i felt worms tingling inside my prostate. is it normal to feel that way?

Yes, this is mentioned in the Aneros WIKI, Understanding Your Body, Rewiring paragraphs.

In the early stages of the rewiring process there are a number of new sensations and effects which new users can expect to occur. You may or may not experience them all but you need not be alarmed when they do happen. Among these are :
...
The feeling of worm like movements just up above the anal canal.
...

Good Vibes to You !