What's it mean waking up multiple times during the night? IS that normal or some sort of insomnia?

yea

I think that's called sleep apnea, where you wake up multiple times throughout the night. You should talk to your doc about doing a sleep study, they'll find out what it is for sure & probably put you on meds. Medical marijuana would help, but most states that use MMJ don't classify insomnia or sleeping problems as something they'd prescribe the pot for. You have to have a pain disorder and the medical records to prove it, that's how it is here in Washington.. I have mine for a pain disorder

It is normal in fact that is how people USED to normally sleep... Waking up periodically is normal. It wasn't until we industrialized the way that we live that we started expecting ourselves to sleep a solid 8 hours so that we could get up, go to work and put in our full work day with no naps or rest during the daytime. If it's really bothering you and you're unable to get enough sleep, talk to your doctor. There are things you can try like natural remedies, (valerian root) or activities like reading, or getting more exercise and adjusting your diet.