It stopped a couple hours ago and I dont know why. Everything seems normal, yet I havent got a click in hours. What the hell???

maybe you got out bid, have you tried to increase your bids to see if there is any change

Start with the basics....Check that your credit card hasn't been denied, also make sure that someone else isnt bidding on the same domain

goto the keyword that you think should be showing and to the right of it there should be an arrow. if you put your mouse over it should show you if your ad is showing for that keyword and if not it will tell you why.

No ad is showing for keyword xxxxxxxxxxxxxxxx

Reasons:

This keyword isn't triggering any of your ads.

What does this mean?
There are a variety of reasons why your keyword is not triggering any ads. If you've just added the keyword phrase to your campaign, you may want to check back in a few moments to see if the status for your keyword has changed. Our specialists review each submitted keyword, so you may experience a momentary delay. Another explanation is that our system may be experiencing a delay.

What can I do?
To improve your ad delivery, you may want to raise your daily budget since it directly affects your ad delivery. If your budget is set below the recommended budget, your ads may not receive all possible impressions. Learn more about modifying your daily budget. Another solution is to adjust your delivery settings to standard or accelerated delivery.

Ive been running this ad for like 3 weeks strait with no problem.

Havent got outbid and it takes money from my cc every $500 spent. Im at about 250 at the moment

Do a search in Google and get the URL of the page you think your ad should be showing on. Take the URL and put it in "Option 2" of the Ads Diagnostic Tool in the "Tools" menu of Adwords.

It just says the geo targeting area isnt the right one, but its normal cause I live in canada and target the us.

Doesnt say anything else.

It might be under the review. It happens every once in a while. My advice would be to chat with an adwords specialist.

I see. What I did is I changed the campaign settings a bit, then changed them back to how they were before. And it started working again.

But If Im going to get reviewed, should I stop my campaign all together? Its kinda black hat

If it is working again then you aren't under review and there is no need to stop it. So for the future reference, when it stops or acts funny delete your keywords, ad copy and landing and display URL if you are doing black hat.