Working during treatment

Hi ladies. I'm hoping someone can help with my questions. I'm newly diagnosed with invasive lobular bc and have yet to see the specialist. I've been reading heaps of stories from everyone and I know every case is different but was wondering, if I require chemo can I still work. I work full time as an administrator from home. I'm on contract so I only get paid when I work and as the "boss" of the family finances I worry how much time I'm going to need off work. Silly I imagine it sounds considering what I'm facing but as a mum of 4 young children I worry. I'm lucky my fiance (husband in 3 weeks) has a good job but I can't help being the practical one and it worries me how everyone is going to cope around here if I can't take care of them all. I'm normally active but the last month have been getting tired by lunch time and achy over my body. Did anyone else feel tired and run down before treatment. I appreciate any answers and thanks for listening to my rambling. I've ordered the my journey kit from here and should get that this week coming. Tanya