This isnt first signs of schizophrenia right?

i don't really know my real mom and i haven't seen her since i was a child but i found out that she has the disease called paranoid schizophrenia and she has had it since she was a teenager...im 20 years old now and seem pretty normal, i heard its hereditary but all my friends and my husband tell me not to worrie about it because i probably wouldn't get it. im still like super scared though, i just got done reading about it and i think i might have some of the symptoms.....: when i try to tell a story with out thinking of exactly what im going to say first i tend to forget everything half way through a sentence and cant remember even what i was talking about for the life of me. when ever i leave a message on a phone i have to right it down first....or the same thing will happen. its weird because if someone tells me a list of things to do il remember everything, i have a great memory otherwise but this only happens when im talking. ive never heard voices or seen things that are not there though, also i was always really shy in school and had a really hard time having conversations with people, this is a sign supposabley, i also have a very hard time expressing my feelings in words....i don't have a large vocabulary and half the time i cant find the right words to say to express exactly what im thinking which makes it hard to talk to people. other then this problem im always happy unless theres a reason not to be, and i have no problem doing tasks or studying. but i was just concerned....