Hi.
Thanks for your query.
You have tested urine for pregnancy by seen in the morning. This is t be seen within the time say 40 seconds or whatever is written on the strip to confirm that it is positive.
This is important as part of the present problems of nausea, migraine-like pain back soreness,
heartburn and
indigestion can be related to early pregnancy.
If the test is negative, we have to think about a generalized problem like mild
gastroenteritis or IBS as per the history you have provided.
I would advise you the following:
Repeat the urine pregnancy test and confirm by blood HCG.
Tests of blood, urine and stool.
Ultrasonography of the abdomen.
If the pregnancy test is negative, a 5 day course of an antibiotic and
metronidazole with symptomatic and supportive therapy will help you a lot.
This will give you the probable diagnosis and a plan for treatment.