Can I be pregnant if already had one periods

[ukrainianmum]

Hi to everybody!!!

Really silly question
I already had periods last month and was due to have them on Friday and I should say that they are never late unless I am pregnant.They were always on time.like the clock.
I had some sex just before my periods,like two days.And before that i had it 2 weeks before periods.And to menetion the guy never finished his job

So I am a bit confused
I haven't done test yet but could I get pregnant?

Yes i am nearly 18wks pg now.

Do a test.

There is no harm in doing a test. Good luck

Test result came back as very negative.

So where are my periods then? I told before I have never missed them,just in one case when I was pregnant