Call AAA - it's not cheap, but you can have their services come out even if you're not a member (you may have to join). My parents canceled their family AAA membership without telling me and I got a dead battery - I was still able to get the battery service to come out, albeit for an additional charge.

A bad battery with a few dead cells will still operate a vehicle, but won't hold a charge for very long, possibly resulting in it frequently dying. You should still be able to jump it - though I would get the battery tested ASAP. I jumped my last car a bunch of time, and it can damage electrical components over time.