Tot- SUDDEN Behavioral changes

Hi mga Mi, ask po sana ako. By the way here are the scenarios: 1. My tot is already 20 mos. old. She can already communicate her needs though gibberish pa siya. 2. Sanay na siya mag sleep at 7 pm or 8 pm and wakes up at 6 am. That's the normal sleeping pattern. 3. Whenever I tell her I need to go out for an errand/work she just waved bye. 4. Ngayon, biglang super clingy niya. Keeps on shouting "Nanay" while crying. Gusto always pakarga. 5. Wakes up, cries a lot, calls my name at 10 pm, 12 am and 2 am. 6. Worst is kahit ako na nagpapatahan sa kanya it's as if hindi niya ako kilala dahil palagi paring umiiyak at tinatawag name ko. Meron po ba kayong almost similar experience? Ano po ginawa niyo? Nagconsult po ba kayo ng medical attention ? Welcoming po your thoughts and opinions. Thank you and pasensya po for a lengthy oversharenting. It's been a week and I think alarming na siya.