Hallow Dear,
Amongst all the symptoms you have narrated, engorgement of the breasts, nausea and
metallic taste in the mouth can be due to pregnancy; the other symptoms are not classic symptoms of pregnancy.
In fact, the first cardinal symptom to appear is missing a period. You have not mentioned any information about her
menstruation. About 8-10 days after the missed period, the other cardinal symptoms of early pregnancy; i.e. nausea &
vomiting with pica,
frequent urination and breast signs like engorgement & tenderness, dark discolouration of nipples & areola with areolar widening, Montgomery's tubercles under the areola and secretions from the nipples appear.
If she is yet to miss her period, please wait to see if it misses it. If she has already missed her period, get her pregnancy test done on the overnight early morning first urine sample 8 days after the missed period. Done earlier, these tests may report false negative. Alternatively, you may opt for
Beta hCG test which gives reliable report even few days before missing a period.
I hope I could help you today.
Dr. Nishikant Shrotri