Hello shilpa ;
welcome to HealthcareMagic
The first symptom that should be present if you suspect pregnancy
is missed period if you had unprotected sex .So if you have missed your period;and have nausea;vomiting;giddiness;breast tenderness;sick feeling then you can be pregnant to confirm you can do a pregnancy test at home.But if you have not missed periods and it is only that you are suspecting because of white discharge then you may not be pregnant.The white discharge may be normal due to sexual excitement or even ovulation.
Hope the answer helps you.