Separation Anxiety

Eilidh is driving me crazy at the moment, i almost feel like my sweet natured, happy little bundle of energy has been replaced with a crabby, clingy alien.
Her sleep is becoming a bit of a nightmare , ok still not nearly as bad as Rebecca but has been waking up once around 1-ish the last week. Its getting her to sleep that’s the problem – ok change that she has just woke again for the third time in less than two hours. She is waking up and SCREAMING , she goes from nothing to complete hysterics in seconds, she is getting up earlier and earlier each morning and only napping for about 30 minutes some mornings – some days she is not taken an afternoon nap at all and when she does its very short 15 minutes or so.
I could maybe cope with this is she was ok while awake but for the most part she is just as fussy and clingy, if i so much as step out of her field of vision she just breaks down and i hear nothing but screams or shouting mummy all day from her.
I don’t think its teething or another illness as physically she seems fine, im
thinking it may be Separation Anxiety – Rebecca never really went through it so im not sure but it does fit all the symptoms.
Im so tired and stressed over this all just now, i had a party i was going to on Friday – something i have been looking forward to for months and im going to have to cancel. I just want my happy little girl back