I didn't ask for alimony in my divorce 7 years ago. Can I go back to court and ask for alimony?

In 2004, just before the economic downturn, when I was 55 years old, my husband convinced me to sell our home and move to a 55 and older community in the mountains. 8 months after we moved, he left me for a woman in her 30's. My life was turned upside down and I was so distraught that I just let him file for divorce without a fight. I had to sell our home at a loss, then move back to Fresno where I was starting a new business. My income from my business was $11,000 that year. I purchased a condo for $198000, and had to use my IRA to help make expenses until I could build my business. With the economic downturn, I was not ever able to generate an income I could live on. I was forced to retire from my business and am now on social security making $1300 a month plus a part time job. My ex-husband married the young woman and they have a 6-year-old son. He makes $50000 a year at his job and draws around $1800 in social security for himself and another $1800 for his wife and son.