Hello I am Dr Ravinder Sharma Pregnancy
comes with quite of good number of complaints
are quite common in first trimester of Pregnancy(upto 12 weeks)
2. Physiological changes that occuur in Pregnancy may contribute to pressure in head and increase in heart rate
But it is incorrect to assume that these symptoms are normal dur eto pregnancy. I would advise you to a Obstetrics and a ENT consultation to rule out other causes of similar complaints. You may require some tests (Blood and Urine test,Blood Pressure, Fundus evaluation and a obstetric check up and Ultrasound
for fetal well being).
I hope this answers your concern