Heat Stroke - first month of Pregnancy.

Hi All, My wife just missed the period and after 5 days we travelled 15 km on bike(approx 45 min) in very high temperature(approx 40 degree) at noon and extreme sunlight. That day my wife felt the heat in body in the evening so I kept her in AC room continuously. Next day 3 there were below symptoms- - vometing - weekness - dizziness - lost of apatite - leg pain in the calf - leg shivering little bit - pain for short duration in lower abdomen There was no fever. After 3 days no symptom was there. Now I am a bit confused, these symptoms are for heat stroke as well as for early pregnancy but these started after high heat exposure. Also in some articles I have read that heat has a bad effect on an unborn baby. I am a bit scared and tensed since this incident pls help me.