help ladies

Hey ladies I'm 26 and I'm over a week late.... last few times I was late by a few days but no sign this time. I know I'm not pregnant because I haven't had sex for a very long time. I have pcos but all that it's done is made my periods heavier and more painful. I have no cramps no chocolate cravings but I do have a major mood swing atm haha hot flushes too.... shall I wait a bit longer or see my GP? Would appreciate some help xxx