Hallow Dear,
Though you had couple of unprotected intercourses, the question is did you have them in fertile window?
Egg is released by a woman's ovary 14 days prior to next expected menses. The egg has a life of 24 hours while the sperms are active for 72 hours. Hence, a period of about one week around the day of ovulation is fertile period. If you had unprotected intercourse during this period, there is a possibility for you to be pregnant.
All the symptoms that you have mentioned are not typical symptoms of
pregnancy. They seem to be due to apprehension. The first cardinal symptom of pregnancy is missing a period. You have your period delayed by just 2 days. All other cardinal symptoms of early pregnancy appear about 8-10 days after missed period. These symptoms are
nausea &
vomiting with pica,
frequent urination and breast symptoms like engorgement and tenderness, Montgomery's tubercles under the
areola, dark discolouration of nipples & areola with widening of areola and secretions through nipples. You do not have any of them.
Your pregnancy test on urine is negative. These tests give reliable results if done about a week after the missed period. Done too early are known to give false negative results. If you have done it too early, please repeat it after a week of missed period on overnight early morning first urine sample. Alternatively you may opt for
Beta hCG test which gives reliable results even few days before missing a period.
I hope this clarifies your dilemma and confusion.
Dr. Nishikant Shrotri