8 month old crying a lot

Idk what’s wrong.. she’s ate, she’s changed but she’s being fussy. she wants to cling to me 24/7 she barely even wants her dad. Why is she so stuck to me 😫 on top of that I’m pregnant with number 2 so I’m exhausted, nauseous and tired. Plus my boobs are sore and she always presses on them when she climbs on me. Am I not giving her the attention she wants?