Feeling full all the time- how do I get enough calories??

If anyone has suggestions I am open to them. I have been eating quinoa and milled flax seed- using these have made me feel full. I have eaten breakfast and lunch today and have not been hungry at all. I am at less than half of the amount of calories I'm supposed to have in a day. If you still feel full- how in the world do you get enough calories? I'm not hungry at all. I know in a couple hours we are going to feed my children. I don't even want to think about eating again, myself but know I have to have to try and have the right amount of calories to make my body keep processing correctly. What a dilemma to have. LOL