My wife's 7weeks pregnant(2nd pregnancy). she's having a lot of nauseau & womitting. since 2 days she's suffering constipation also. kindly help.

See a doctor: It's possible she's dehydrated, she might need some IV fluids if she's so nauseated that she can't keep anything down. The constipation is a sign that she's likely quite dehydrated. There are relatively safe anti-nausea medications in pregnancy, she should talk to her doctor about options that are available where you live. In the meantime, ginger tea and accupuncture may help for home remedies.