Hello, I have gone through your query and understood the concern. There are several possibilities in the current scenario. The vomiting and the diarrhea could mean an infection. The giddiness could be due to the electrolyte imbalance caused by the diarrhea and also possible due to fall in the blood pressure. Alternatively, a threatened preterm labor can often present with diarrhea and raised hypertension could be another possible factor that should be thought of. So long as there is no gross disturbance and the fetal movements are well preserved, there is no need to worry about the fetal well being. Yet, please report the matter to your health care provider and get proper help. Wish you good health.