On the forums at
www.oldpremeds.net is a lady named Mary Renard. Her picture looks to me as if she is a black lady, and she is in her 40's (I think) and a recent med school grad. She is FULL of advice and great to talk to!
Medical school now are looking for diversity, so don't be worried about being black. If your grades and stats are competetive, you'll be in the running like everyone else! Don't feel old - I just finished my gen bio/chem sequences and have 2 more years to go - I'll be 32 when I enter med school (crossing fingers!).
As for most important courses, you'll definitely want to include your pre-reqs:
1 year gen chem w/lab
1 year gen bio w/lab
1 year physics w/lab
1 year organic chem w/lab
1 year math
Some schools also look favorably on biochem, genetics, A&P, etc.
I am lucky in that my fiance is very supportive, but I also remind him that if he sacrifices for me now, then I would be more than happy to have him retire after my residency
He loves that idea!
But honestly, if this is something that you truly want, then your fiance should support your goals. He doesn't have to be gung-ho about it, but if he supports you and doesn't stand in your way, then that's great. It sounds like he's doing that now. If he's concerned because there aren't many black female doctors, let him know that there used to be very few women doctors at all, besides skin color!
I found a few websites for you to show your fiance, and to lift your spirits:
http://www.anes.uab.edu/jeffcodocs.htm
http://www.blackrefer.com/health4.html
http://www.gast-gazette.com/portal/asp/news/newsDisplay.asp?ID=576
http://www.findarticles.com/p/articles/mi_m1077/is_2_58/ai_97729830
http://www.med.wayne.edu/Scribe/scribe01-02/fall01/s-african american physician honored.htm
Good luck, and remember to post if you have questions, thoughts, comments, etc.!