19month old suddenly screams at bed time

My daughter has always been amazing at bed time. Just lay her down with her dummy and she’ll lay there for about 20minutes and just fall asleep by herself. Sometimes she’ll be talking to herself or occasionally have a little whinge (usually means she’s thrown her dummies out the cot and needs you to retrieve them) but overall SUPER EASY.

Out of nowhere this week she has suddenly started to LOSE HER MIND when you put her down. Not even crying, literally screaming and clutching onto you when you try to lay her down. The first night I thought she must not feel well and gave her Panadol but it didn’t help. It’s happened again for the next 2 nights. It also happened when I tried to put her down for her nap. On her daycare day they said she had no trouble sleeping as normal.

Tonight I thought we might be in the clear, I laid her down and she was fine for about 15mins and then she just started screaming out of nowhere. She calms down almost as soon as you go in and pick her up and starts crying again as soon as she can sense you leaving her again.

Any ideas? ☹️