Seeking Allah's Mercy
Qul HuwaAllahu Ahud!
could be
no sister we cannot say they are made up.they are signs but our faith must not just rely on such signs
there are signs everywhere in nature.there are hundreds of miracles mentioned in the quran which are all but signs
http://www.miraclesofthequran.com/index.php
these outwardly miracles or signs should have little value in matters of faith of a believer.