that has to be talked about with your oncologist and primary care dr as to the effects the tumor and prognosis has on your fertility. But you will have to get the tumor taken care of befor egetting pregnant. You might be infertile form it and will need a full work up as to your hormone and ovary health first also.
If you have a brain tumor, that is VERY serious. Your Brain Tumor has to be taken care of first. Especially if its cancerous. Then you can think about children, after going thru chemo...... seriously, please take care of yourself first.!!!!! God bless!