Yes, it is possible even tho its not a big chance it is still possible to get pregnant
Food and Drug Administration
For items over 50 pounds, squat down and firmly grasp the object. If necessary use gloves. When lifting, lift with the knees, not the back.
Physical activity is important for everyone, but how much you need depends on your age. Adults (18-64 years) Adults should do at least 2 hours and 30 minutes each week of aerobic physical activity at a moderate level OR 1 hour and 15 minutes each week of aerobic physical activity at a vigorous level. Hope I helped :)