Probably. If things get worse, you should check a doctor
Social health. So yeah, hope it helps.
The statement that a pregnant woman planning her diet should generally include an extra 300 Calories per day is true. Pregnant women should eat a balanced diet. In the second timester the daily calorie intake should be increased by 300 to 350 calories per day. That's the equivalent of, say, two glasses of skim milk and a bowl of oatmeal
This is referred to as DOMS, Delayed Onset Muscle Sorenes. The exact mechanism is not understood, but DOMS appears to occur due to connective tissue microtrauma.