Carrying a laptop in a backpack during the early stages of pregnancy can generally be safe if done with consideration. Ensure the backpack is not too heavy, distribute the weight evenly, and maintain proper posture while lifting and wearing the backpack. Opt for a backpack with padded shoulder straps and a supportive back panel, and adjust the fit to your comfort. Consulting your healthcare provider is a good idea to get personalized advice based on your health and pregnancy.
If it’s switched off, it’s alright I guess if you’re worried about radiation.