I want a loving mother or parent to love me unconditionally. Is this possible? How do I get over it?

If you have not had unconditional love from a parent by now then you can forget it. You can't change them, but you can change yourself. You need to read books on self esteem, and work on you! Put all of your love in your children, and most of all, put lots of love in yourself, once you love yourself then it will spill over, learning to love everyone. And boy you will fill so good about yourself.