Trackpad pushed up, battery may be swelling

Hey, I have an XPS 15 9550, bought it August 2016, and it was going great until a few months after my warranty expired August 2017. The trackpad start to push up for some reason, which made no sense to me because I can't push it up from the bottom of the laptop (obviously)

I started reading these forums and noticed everyone bringing up a point that the battery might be swelling. That sounds like an absolutely ridiculous problem for a $2400 laptop, but here I am facing the same dilemma as others.

I'm bringing this up now cause I want fresh suggestions, as the other posts seemed to be from months ago and maybe there are better solutions now. Any help would be appreciated, this isn't looking too good for Dell tho. This is my first laptop purchase, and it had a hefty price, only for it to veeeery conveniently act up AFTER my warranty wears out. I'm hoping I can get a better deal from Dell rather than forming over another $200 to buy a warranty