Accidental exposure

I already know I’m a shitty mom for having this happen I should’ve kept a better eye I just didn’t even know he had them. But my toddler gave my 9 month old Cheetos 😭 she ate a few but I’m not sure how many. Now about 2 hours later she’s been spitting up a lot. It doesn’t seem forceful or anything like that. Is there anything I need to watch out for? We just moved and don’t have a pediatrician. I couldn’t get an appointment until this summer.