1 yr old won't leave me alone

Hi ladies! So I need just kinda need to vent and get any kind of advice. My daughter is almost 1 (aug 30th) and I've been a SAHM since she was born. She's always been clingy to me. Now recently I just started a part time job. I work only 25hrs a week. Ever since I've started she's been giving me absolute hell! For the past two weeks she has done nothing but whine, cry & nurse, nurse, nurse! 🤦🏻‍♀️😒 it's becoming too much. Just now I went to go take a shower and the whole world ended. I've chalked it up to her cutting 4 teeth at once and having a really hard time with it. Part of me really thinks it's because I'm working and she doesn't understand why I'm leaving. She's with her daddy the whole time and when I'm home she wants absolutely nothing to do with him. She cries if he tries to hold her. Needless to say I'm exhausted. I can't continue nursing this much. It's every hour. I do not understand why. She eats plenty of regular food. Idk what to do. I feel terrible that she's going through such anxiety. Will it get better? I don't even know how to wean if I tried. Any advice would be much appreciated. Sorry if I'm all over the place, I'm tired lol.