I've never had this happen before. It broke on the 29, my period is supposed to come on the 7. Or around there.
Could I be pregnant? And what are the odds that I could be if I am...

It's possible, but odds are in your favour that you won't be. You'll have to just wait and see what happens when your period is due.

If it doesn't show up on the 7th, give it a few extra days before you try a test as sometimes cycles can be off a bit.

You may want to consider using an additional form of birth control in the future to lessen the odds of pregnancy even more.

Could you, yes of course, low chance but still chance,
Since this is not Vegas, not sure the "odds" but of course even with a condom, there is still a chance I am told, due to many other factors