I dunno...I think oatmeal is a really healthy and good breakfast, so long as it's "real" oatmeal (steel-cut oats or regular non-quick oats) w/o a lot of added sweeteners. I add dried fruit, walnuts, and just a few drops of agave sweetener to mine.
Plus, in most cases, what you have for breakfast is well-used and burned off during the course of the day. I'd look more at what you're having from after lunch on. You know the old saying "Breakfast like a king, dinner like a pauper" (can't remember about lunch, but it's in between!) Eating a light dinner full of healthy vegetables w/a smaller amount of grains and protein and then not eating ANYTHING after dinner always seems to help me with weight loss, though it's challenging. If you eat too light at breakfast, you'll be ravenous later in the day and may overeat.
Can you ride your bike on a trainer until you can get outside? Or a spin bike at the gym? Not sure if you're allowed to use the elliptical yet, but that's a great workout that doesn't require pounding on your ankle as running would.
good luck!
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow