AYou sound like you're doing great! That's awesome.
One thing I am noticing though... on the calorie estimations for exercise, they are really not accurate. There is no way you burn 70 cals running uphill for only five minutes or 300 cals walking uphill for 30 minutes (not to rain on your success, of course!!). Even attempting to monitor the amount of calories you burn through exercise isn't worth it. There is no way you can be accurate unless you're in a lab strapped to all kinds of machines and having your VO2max measured, temperature, etc, and as you get fitter, the amount you rburn decreases (hence the need for intervals and pushing you rbody harder every time you exercise). A better thing for you to do, especially because you are just beginning to utilize exercise in your daily routine, is to shoot for a time amount, and give your fullest effort during that time, and track that. You can track repitions in an amount of time, or until failure, over the course of a few months, and that will give you a better picture of how exercise is affecting your fitness and health. AKA - I ran a mile this week in this time, then in three weeks after running every day I ran it 37 seconds faster, or I did 10 pushups without resting two weeks ago, and after doing them every day, I can now do 18 until failure. ETC.
This is probably the most accurate way to estimate, and it's only for running/walking on level surfaces, and it's only for a mile distance:
What's the Burn? A Calorie Calculator
You can use the formulas below to determine your calorie-burn while running and walking. The "Net Calorie Burn" measures calories burned, minus basal metabolism. Scientists consider this the best way to evaluate the actual calorie-burn of any exercise. The walking formulas apply to speeds of 3 to 4 mph.
Your Total Calorie Burn/Mile
Running .75 x your weight (in lbs.)
Walking .53 x your weight
Your Net Calorie Burn/Mile
.63 x your weight
.30 x your weight
Adapted from "Energy Expenditure of Walking and Running," Medicine & Science in Sport & Exercise, Cameron et al, Dec. 2004.
So if you ran a mile, your net calorie burn (total calorie burn is inclusive of your BMR - use the net formula) would be almost 137 calories. I'm guessing that you run a mile in about 15 minutes, based on your current activity levels, so use that as an estimation... 15 minutes gives you 137 cals burned.
Keep it up, you're doing great! Remember - any activity is good activity.