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As, I have gone through the reports (attachment removed to protect patient identity), the results are absolutely normal and indicating a healthy pregnancy. As the values have doubled, you need not worry. In ectopic pregnancy, beta hCG (human chorionic gonadotropin) values will never rise more than 66 percentage. Did you have any ultrasound done till date? I suggest progesterone tablets and this will reduce the vague abdominal pain. Regarding tests, you should get all antenatal investigations and ultrasound for cardiac activity. For gastritis, I suggest tablet Rantac (Ranitidine). Instead of Cetirizine, I suggest tablet Allegra (Fexofenadine). But, as such Cetirizine is safe in pregnancy.
Investigations to be done:
BG (blood gas), CBC (complete blood test), HIV (human immunodeficiency virus), STS (serologic test for syphilis), HbSAg (hepatitis B surface antigen), urine routine, thyroid profile and blood sugar fasting.