Help please!!

Ash • Married 💍

Sorry for the typos in advance i am writing this as quick as i can before my little 19 month old loses it again. For the last week she has been absolutely losing her shit! It comes randomly and she will scream and scream and scream and there is no calming her down. I try everything cuddling rocking singing etc. She flings her head back and tries wriggling out of my arms but as soon as i put her down she screams and puts her arms up for me to pick her up again. And repeat. She cries to the point of almost passing out red face breathing erratically. I know she has a bit of a blocked nose but thats been going on for weeks. She is oky some parts of the day but then will randomly lose it a couple of times a day and it will last a hour or two sometimes. Please help i am so lost and unsure. No fever, otherwise fine. Just randomly losing it. Just now she lost it when i brought her dinner to her and flung her self around so angrily and violently she almost toppled her chair! The other day she lost it when her dad clipped her dummy back on her top as it had fallen off. Last night she lost it because i went into the bedroom to check on her and make sure she hadnt thrown her teddy out. Im exhausted.