Hallow Dear,
You seem to be quite stressed out by the possibility of
pregnancy.
In fact, the first cardinal symptom of pregnancy is missing a period. All other cardinal symptoms like
nausea &
vomiting with
pica,
frequent urination and breast symptoms show up after about 10 days of missed period. So breast tenderness at the time of intercourse cannot be attributed to pregnancy; it would be merely due to handling of the breasts.
Since your menses are irregular, it is a million dollar question to answer whether you have missed your period or not. The home pregnancy tests give reliable reports only after about a week after missed period; however since your menses are irregular, you cannot decide whether you have missed your period or not.
The reliable alternative for you in this situation is to opt for
Beta hCG test. This test gives reliable report about 10 days after the conception. So get this test done 10 days after your last
unprotected intercourse. If the values are under 5, you are not pregnant while values more than 25 are diagnostic of pregnancy.
Intermittent bloody brownish discharge may be a part of your irregular menses.
However, if you are pregnant the brown discharge is not a good sign. It is indicative of non-viable baby, when termination of pregnancy becomes mandatory. So, if Beta hCG test reveals that you are pregnant, please visit to your Gynaecologist ASAP.
I hope this helps you.
Dr. Nishikant Shrotri