thankyou SOOO much for that link, i never even knew i could apply myself. i truly don't know what to do anymore. do you personally think i should continue?? what would be the pros and cons??
I can only deal in hypotheticals as I don't have any experience with this sort of thing.
I guess it depends on your personality. Are you good at filtering out distractions? Do you think you'd be able to study without thoughts of your parent intruding all the time? If so, having exams to study for may be a good way of maintaining some degree of emotional and mental stability. You cannot, and shouldn't expect to, spend 24/7 with your parent.
On the other hand, if you don't think you'll be able to do that (and there's nothing wrong with that - I wouldn't be able to focus in your place) then you should consider applying for a derived score. Otherwise, you risk not only getting a lower exam score than you deserved, but you may also end up beating yourself up after your parent passes about "not spending enough time with him/her" (which is NOT TRUE and NOBODY will begrudge you for doing other things, but I'm just saying that emotions can be irrational).
It also depends (and I apologise in advance because I don't know how to approach this without sounding insensitive) on the stage your parent's cancer is at. If there is a chance that they will be at the stage where they'll be unconscious for most of the day, then studying at their bedside may be a good way of passing the time while still being in their presence - spending time with them. Again though, remember that hospitals are not the best study places.
I can't make your decision for you because I don't know you at all. If I were in your place I would apply for a derived score, BUT that's because I know that I would have trouble focusing on studies with this kind of thing hanging over my head. You might be totally different.