New Internet problems -__-

So my computer and internet have been working fine up until about four days ago, but now, im having problems with my internet. It seems to cut out for about 30 seconds at a time or so every so often, and causes pages to fail. i believe it might be my router, because when the the problems occur, it stops brodcasting in the list of connections. I have tried troubleshooters and even reset my router, but nothing seems to work.