Is hot temp. will affect the baby in womb

Like a fever? Or are you talking about the weather?

When you are pregnant you should avoid anything that might raise your body temp. This includes things like hot tubs. If you are talking about the weather, just be careful. Drink lots of water and stay cool. You don't want to dehydrate yourself or get too hot.

Hot temps in any way shape or form can harm baby. If it is weather, try to remain cool. Never use a heating pad on your belly for any reason. If you have a fever, get to the doctor.