Hi, Thanks for the query. Pregnancy is possible if you had unprotected intercourse around the time of ovulation. The symptoms you are having could be due to the gastritis. Bowel movements, passage of gas etc can be interpreted as baby movements sometimes. Thinking continuously about pregnancy can lead to symptoms which mimic pregnancy. This is called spurious pregnancy. So, better come out of the thought. Undergoing ultrasound can clear the doubt regarding pregnancy and also helps in finding out the cause for bloating, cramps etc. Avoid constipation, maintain good hydration and healthy nutrition. Take care.