Hi
Thanks for writing and i have gone through your question.
Irregularities in menses are common and as you have mentioned you had protected sex and on 3rd day of your period you are less likely to be pregnant. But it is important to evaluate irregularities in menses.
One of the earliest and simplest way to know that you are pregnant or not, is by using, urine
pregnancy test.
Most experts advise that you should wait at least one day after your missed period before taking a home pregnancy test, though waiting a week is considered best. This can be tough when you are anxious to find out if you're pregnant, but waiting allows for a higher degree of accuracy when taking the test, as
hCG levels rise rapidly in pregnant women.
It's best to do the home pregnancy test first thing in the morning, when your urine is most concentrated and hCG levels are highest.
So I advice you to perform a test a week after missed period and with morning sample of urine. This test kits are nearly 98% accurate, so reliable.
With transvaginal
ultrasonography, the diagnosis of pregnancy can be made earlier by 4-5 weeks gestation
Yet again, I duly appreciate your query to me, I do hope that have found something useful to help you and I shall be glad to answer any further apprehensions.
Sincerely,