I have 2 stones that might be Amethyst they are both a little cloudy inside how can I tell if they are real ?

Cloudy inside is a clue that the stone is real, while man made ones are totally clear and not so natural. The stone you have are not of very high quality, as the inclusion could be seen by eyes. Natural stones are have a rather weight than man made ones. Try to compare many and you can distinguish between them