Hi!
The "general rule" is that a person shouldn't go below 1200 calories a day for an extended period unless on a medically supervised program. The reason is that one can't get enough nutrition without supplementation, and it really needs to be personalized and monitored medically.
I tried adding up what you ate, and it looks like it's below 900. Yikes.

And also, there doesn't seem to be much protein.
How about trying to spread some protein throughout your day? For example, you could have lowfat (2%) cottage cheese with the apples. And tuna (water pack) is a really good source of protein, is low cal, and is readily available. Also, whole grain bread does not have to be the enemy, as long as you stick with 1 slice per meal. Pepperidge Farm 12-grain is what I like.
At the top of this forum is a Sticky Thread that has frequently asked questions. You might want to read that to see what a better calorie range would be.
Jay