how many weeks or months are you now?
have you visited a gynae alrdy?
Some mommies during lst trimester dont have any MS or craving,they just feel as per normal...when your bump get bigger you will sure feel the diff one...dont worry
as for the cramp I tink it will be better to let your gynae know and see what it say
altough there is no spotting or bleeding...
....just be happy and take good care