TTC and X-ray chemicals??

I work as a chiropractic assistant and am frequently developing X-rays. I don't take them, just develop them in a dark room. Anyone know anything about the dangers of these chemicals with TTC?? 
​When I first started they said no developing when TTC, but now that another girl is pregnant there isn't much we can do, and they now say that it's fine until you actually get pregnant. 
​Any opinions? It's been about 6 months negative so far and I'd hate something like that to have something to do with it..