hmm i was worrying that might be the problem... If i bought an SSD just for the OS would i notice faster boot times and loading times?
Yes you would.
Mainstream HDD high read speeds: Average is some where between 75 MB to 125 mb a second.
SSD's: 250 MB a second.
Now one of the other thing's that you could do is disable alot of your start up programs. this will aloud your HDD to work on fewer stuff allowing you work on your computer sooner.