You sound like me!!!!!!!!!!!!!!!!!!!!!!!!!!
I have a half sister and half brother from my father's first marriage.
He got divorced and then married my mother and had my brother and I, then my father passed away and my mother got remarried to my stepdad who had a boy and a girl from his first marriage (step brother and sister), and then together my mother and stepdad had my half sister!!!!!!!
So, there is 7 of us total. I only have one sibling that is full blood!