Six months is not so bad but don't do more than that. It is a
favorite trick done by people who like to job hop. I am not trying
to give u sleepless nights but you do remember when you sign your
employment contract, u promise not to omit any info or give false
info. So they can do anything they want to you.
However, some employers do give their staff a second chance,
they may want you to prove your worth, so expect your boss to give
you some pressure because he wants to see if you are what you
advertised yourself in your CV.
Forget about your former employer. U dun work there anymore,
they dont give a shit about you. So dun bother calling them. U have
one saving grace, 6 months is not so bad, I have known people who
kena, did more than that.