Thanks for the query.
As you are not having regular periods it is difficult to guess the time of ovulation and possibility of conception.
Just by symptoms we cannot confirm or rule out the possibility of conception.
So now you once go for blood test
which will rule out the possibility.
If test comes negative once undergo ultrasound
, if that is normal go for tablets to induce withdrawal bleeding.
From that you can count your menstrual cycle, track ovulation and plan intercourse around that time which will increase the possibility of conception.