Toddler driving me insane

My child will be 2 in Jan and she has been driving me insane . She’s always crying demanding I carry her . She’s been very picky with food lately so not much eating going on she’s still breastfed (trying to wean) she’s constantly pulling me to the kitchen asking to certain foods and as soon as I give them to her she dumps them all over the floor the minute she gets it . I’m currently 19w pregnant and don’t feel the best some days and her clingyness doesn’t help (I’m sure someone will say it’s cause I’m pregnant that she’s acting this way) but some days I feel as if I just have no patience . Not to mention she gets upset and results to hitting she’s always digging her nails into me punching or sometimes even tries biting . I have no idea what to do anymore. She never wants her dad and gets furious when he tries to be the one to grab out help her so I’m the only one always doing everything