Stress!

I'm 28, TTC 7 months...I have a stressful job and I think I'm a naturally stressful person and quite particular! I used to do a lot of sport to get rid of my stressful tension, however since a slipped disc in my back I haven't been able to do so! I'm worried that my stress levels will affect my chance to conceive? Also, TTC is a stress in itself and I feel anxious about my back and bearing ability during pregnancy!! Anyone had any experience or have advice on any of the above! Many thanks all