can you use the peroxide bottle #10 or #20 to dye hair while pregnant? I'm dying chunks of my hair at the top only (not my whole head) that are light brown to dark brown i won't be touching roots cause its already dark brown. ima be using the box with no ammonia cause my salonist said it was the best for me even tho the hair dye would only last 2 wks. BTW I'm 4 months already barely (14wks & 4 days)