Hello and welcome to HCM,
If you want to confirm or rule out 
pregnancy, take up an urine pregnancy test.
Discharge from the vagina can occur in number of conditions.
Onset of 
menstruation, leucorrhea, infection of the genital tract are just few conditions to name a few.
Feeling sick is one of the features of 
morning sickness associated with pregnancy.
However, morning sickness is seen during first three months of pregnancy.
The onset is usually after 15-20 days of conception when the HCG levels start rising.
There can some other reason for your discomfort.
Indigestion, 
gastritis, or any other gastrointestinal disorder can also cause the symptoms mentioned by you.
Thanks and take care
Dr Shailja P Wahal