Can you have more than one FMLA if one is for a family member an then one is for self or combined?

I would like to find out if you can advise if you work for a company and you was taking FMLA for a sick parent and has used that time (35 days so far) and now myself have been put out because I have carpal tunnel and doctor placed me on limited duty of work and wants me to take frequent breaks for my arm and they told me I can not work because they have nothing for me to do an I have to go on FMLA for myself. Now would that be a separate FMLA for myself or would I be using the same FMLA for my mom and still have only 25 more days left of FMLA time left? And if I have short term disability does that not count towards something? Can you please advise? Thanks for your assistance..