The days when I travel with my toddler....
There are various and different type of reasons which cause nausea in toddlers. Sometimes, we did not get to know why the kid is getting uncomfortable. In my case, when my daughter was 7 months old, she vomited and spelled out the whole milk (we were in the shopping mall that time). I thought may be she didnt digest the milk. But it happened again after few days. That time i was quite sure that she has taken proper burp. The food is digested then why she vomited again. She was full of sweat and her forehead was cold. I realised it was something different. We noticed that it happens only when we travel by car. We started avoiding go outside with her. However, we tried every toddler medicine which the doctor or the family and friends suggested us. It gives relief but for the very short time. She turned to year one and we planned trip with my husband's friend and his wife (Both are Doctor) to 'Shirdi'. We forgot the uneasiness of my daughter during travelling. Because she was totally fine in last 6 months. (As she did not travelled much in that period of time. We go to market then we prefer two wheeler). It was a long journey for her. But in the mid of the way, it started all over again. I did not fed her anything so that her stomach will be relaxed. We are just giving her water through her sipper time to time. But she spelled out even water. We came in to our veins. My princess's chubby tomato face turn to tiny cherry face. Her big eyes were shrinked. Our friends helped a lot to take care of my daughter. We bought the medicines which they suggest to give her during travelling, it relief her for some time. She sleeps for 2 hours and when she wake up, vomited again. We doubt, may be she feel uncomfortable due to closed window glass. We opened it but continued Air Conditioner ON. She felt little relaxed. Our trip was over in next 2 days.  We planned next trip with my sister in law's family when she was 18 months. We were in fear that she will not be comfortable. But we somehow relaxed knowingly that now we know the solution to make her comfortable. We made sure that she will be in the lap of a person on the front seat. We will not take her on the middle seat and back seat, not even once. But, it happened again. Even worse this time.( It was a long long road trip. Distance as well as days. Its 1600 km. One day 1000 km, Night stay and other 600 km next day. 10 days trip. Eventually, it was 4 day trip. 6 days we were in the car, travelling only ). She was vomiting  minimum five times a day on daily basis. She is already under weight and reduces 2 more kgs. She came in normal position in 3 months after our last trip and again she reached there. We were regretting from our souls and we just finished that trip praying whole time. And touched our ears that we will not plan any trip until she is five. Atleast she would tell us then that she is feeling uneasy and we will stop the car and she would not suffer.
It is not like that we did not go any where. Yes, we go at the times where we can not avoid. But with Window glass open and Air Conditioner off. Even if there is 45 degree outside. She is 2 years old now and She is doing much better. As, now i came to know from her body language that she is not feeling comfortable. We stopped there only and took her out and relaxed her for atleast half an hour. Then we move further. Alas!! It took 2 years to find out her comfortness. 
Afterall, Nothing is more important than our kids and their health. Right???
Thank you dear Reader for your valuable time. Your suggestions and comments are most welcome.
Pooja Garg.