Celestia: Pregnancy hormones may have made me less than regal. So yes, I have had foals. Only the first two were biologically mine, though. My later spouses and I adopted. I grew to prefer adopting, anyway. Same love, no awful pregnancy. I dont know why I couldnt conceive after my first two sons. I have multiple theories but a sample size of two isnt really conclusive even if the results are the same.
Speaking of, I did get Luna back a few years later for her incessant teasing when she got pregnant with her only biological foal. She had even weirder cravings and rougher mood swings than I did!