There are many woman that are single mother's by choice (SMBC). Babycenter.com has a group that is SMBC. I'd start there. Sorry about your relationship not working out....been there done that with guys too. Don't waste anymore time and maybe try right away?
Low dose meds might help out, but go to a RE that is high FSH friendly. Not sure where you live, but Cor.nell in NYC and CCRM in Colorado are good places for reproductive endo.crinologi.sts. You can always ask on here. These ladies know their stuff. High FSH at 41 is not the end of the world, but I'd get going now and sounds like you are.
With higher FSH, I'd opt out of any regular protocols - using BCP's. Again, just start a post and ask questions about protocols and docs, so you can understand what the best choices are for infertility treatment. Good luck!