First Trimester

Wife is 7.5 weeks pregnant and having morning sickness throughout the day which causes her to vomit several times in a day. The smell or thought of food just turns her off so much that she hardly eat, though she is still drinking water. Now she is also experiencing some chest pain and is feeling restless. Any mothers experienced it before and any remedies to help? Felt kinda helpless when i could not ease her uncomfort.