One should offer salah during solar and lunar eclipses and should get oneself busy in dua etc. The same ruling is for a pregnant woman as well. A woman should not come out of her home without a need, but it is not prohibited due to kusuf and khusuf. Preventing her from cutting vegetables and giving in charity the worn clothes is baseless and nonsense. It is not right to have such belief.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband