Anyone else work with special kids?

I'm a FTM and I work as a nanny to an autistic toddler, it's been getting harder to deal with since he will kick and do all kinds of things that I'm afraid I might end up getting hurt, he's almost 4 so it's getting harder for me to control, I'm planning on working until I'm 8 months but I'm not sure if they family will still keep me until then. I really need this job to save up for maternity leave since I won't be getting paid and I don't want to quit too early and not be able to find another job since I'll be almost 6 months by then, like I mentioned before I'm not even sure if they will actually keep me until then but I don't want to show any signs that I'm not capable of doing my job. Anyone else in a similar situation? What's the best thing that I can do to be able to still do my job as my belly size increases? Thank you!