Vaginal bleeding she is having is most likely to be her menses if they were due this time. During menses many girls feel sick and get gastric upsets. Her bloating
of the abdomen seems to be due to constipation
due to digestive upsets. This also is commonly found during menses. Give her some stool softener
with carminative like plain soda which will clear her bowels and she will feel OK.
If the bleeding is about fortnight earlier than her expected menses, it could be her ovulation bleeding (Mittelschmerz: Some amount of bleeding at the time of egg release). If she is getting pain in the abdomen, she may take some antispasmodic painkiller which will give her some relief.
If you are suspecting her to be pregnant, do not hesitate to get her pregnancy
test done; however she had menses, so no chance of pregnancy.
Hope this helps,
Dr. Nishikant Shrotri