Hi, Thanks for the query. I understand your concern. Smoking has it s dizards in firm of allergy/respiratory disfunction in form of bronchitis providing less oxygen & less provision for energy needed for fetal rearing. Baby is likely to have less birth weight &less resistance. But as you have left smoking now...baby will get better energy for rest of weeks (about 5-6 weeks) & will recover to some extent from the damage. -It will also help you in giving birth .. the delivery . To make up the loss you should have nnourishing diet with proteins (milk,pulses,non veg food except for liver)/vitmines&minerals (plenty of salads,fruits . Take B complex,vitamin Esuppliments along with routine calcium &iron . Do not ever try yo smoke again... not while the baby iß by your side,for the indirect inhalation of dmoke would dsmage babies respiration . Take care thanks.