Getting Cold Feet!!! Help!!!!

So this is a pretty long story... I have been with my fiancé for about 5 years now, and we're getting married in a few weeks. Well we've always had the same problems throughout our relationship and I always looked past them because I love him. But I'm starting to freak out and getting cold feet because I don't want to make a mistake and end up getting divorced later down the road! Our problems basically boil down to his laziness/lack of motivation. He quit a job once without getting another one because he didn't want to work there anymore, and we ended up getting evicted from our home, I wasn't making enough money to support us solely on my income. That was 3 years ago. Well, things finally started getting better financially and just generally, a year ago. We got engaged and he got a really good job, which i had to search for and email to him so that he would apply for it, and we were saving up money and all that Jazz. But, about a month and a half ago he got fired, and he still doesn't have a new job almost two months later. All the bills are now falling on me AGAIN and I feel like he has no motivation to get a job. We're barely holding on and I've been picking up extra shifts at work to makeup up for his lack of income. He just assumes everything will work out. He's talking about selling some of our valuables to pay bills, which I don't think is a good solution! I'm starting to resent him so much. I go to work everyday and he just sits at home all day doing God knows what. He says he's been applying for tons of jobs but I don't understand how he still doesn't have one if that's true. I just don't know what to do. I can't fall into this pattern of good times feeling secure, to bad times where he has no job and we're struggling to pay rent. I don't want to be married to someone who can't hold a job and offer me security. I love him so much, but I can't do this. I want to call off the wedding but I'm scared it's too late. Its literally weeks away and family members have already purchased plane tickets to come from out of town. What do i do?!!!