There's really no way to say whether you are eating enough because you give no amounts for the foods you mention. A peanut butter and jelly sandwich could be a couple of hundred calories or it could be a thousand.
Whether what you are eating is enough to sustain your workouts is something you can answer better than us. Is your energy level
high, enough so it doesn't compromise your lifestyle. How is your weight? How about body fat
? Anything changing?
14 miles of biking every other day might sound like a lot to some folks but, really, if you are riding slowly, its awfully easy and might not affect your training at all. If you are fit, even an intense 14 miles might take 45 minutes total, maybe even less.
Details, details details. It's all in the details.