From memory, your more likely to bruise if your low in iron, so perhaps try incorporating more iron rich raw foods into your diet for a while to see if that helps (parsley, brazil nuts, spinach etc etc).. perhaps try having some fresh OJ with when eating a higher iron meal (some think that vitamin c helps with iron absorption) ...
It might sound a bit random, but it might not be related to your food at all - when i first went raw (about 3 years ago) i started taking note of every stay hair in my hairbrush and bruises etc just in case they were a sign of malnutrition... but after a while it dawned on me that the amount of hair i lost a day or the amount of bruises i had were the same as before i went raw (except now my bruises and other ow-ies healed quicker and any hair i drop in a day is replaced with stronger, shinier hair) - i was just noticing them more because now i was more in tune with my body and was more interested in what was happening to my physical self.
That being said, it wouldnt hurt to make sure your covering your bases nutritionally and if your worried perhaps drop in to your chosen naturopath/doctor etc
Hope that helped!

Luv kt
xox