I'm not sure what's wrong with my toddler

Hi everyone, I was wondering if someone could help me please - maybe someone on here has been through it before with their little one? My LG is 1.5 years old and for the last couple of days, she's been having an awful night's sleep (waking up every couple of hours crying/moaning) she's been feeling hot but weirdly no temperature, her breath has been quite smelly and she has been extremely tempermental and grouchy (she won't even go to her Dad, only ever wants me and the slightest thing can set her off and then it's quite hard to calm her down). She's also hardly eating, dinner's seem to be her worst meal and the others she'll just have a couple of bites and then she's done. She's also just not seemy herself at certain parts of the day, usually she's so full of beans but lately she's just "had enough" by a certain time and gets all cuddly and just wants to watch TV (which we've been trying to really limit as we don't want her relying on it). Could this be teething? She has been grabbing at her mouth a lot and wants her dummy so much more than before (usually she will only have it for sleep). I would love to hear if anyone else has been through this and what you did as I'm at a loss as to what to do. I feel like she's not my usually happy little girl lately and i'm worried i'm missing something. I just don't think the doctors or hospital will do anything if there's no temperature.