DavidB...the number to Soc Sec is: 1-800-772-1213 Best to contact your local office if that is possible.
The following two links are to the social security website and regarding if you're divorced and if you aren't.
https://www.ssa.gov/planners/retire/divspouse.html
https://faq.ssa.gov/en-US/Topic/article/KA-02011
I started collecting on my own work history and the EX when i was eligible, even though he didn't start drawing social security for several years later. However i was drawing soc sec myself. The only requirement is that a person is married for 10 years. I paid NO FEES and it wasn't difficult. All you need to do is contact Social Security.
The person at social security will be able to answer all your questions and guide you in the right direction. Good luck.
I'm adding this from the soc sec site as well: https://blog.ssa.gov/understanding-spouses-benefits/
Your full spouse’s benefit could be up to 50 percent of your spouse’s full retirement age amount if you are full retirement age when you take it. If you qualify for your own retirement benefit and a spouse’s benefit, we always pay your own benefit first. You cannot receive spouse’s benefits unless your spouse is receiving his or her retirement benefits (except for divorced spouses).
Hope the above helps.
Never Look Down on Anybody...Unless You Are Helping Them Up. 🙂