The symptoms you mention are non specific and we never diagnose pregnancy
by symptoms like this.
Pregnancy is either diagnosed by a pregnancy test (blood or urine), or by an ultrasound
Of course it is a great propability that you are pregnant, since you have a missing period.
If pregnancy is diagnosed, I advise you to have frolic aci supplementation (very important) and to have the routine antinatal blood tests.
Finally I wish you the best of luck.
Dr. Ahmed Bahaa.