Period overdue 15 days. Home test negative. Can I be pregnant. Using condom as contraceptive and have twins as a result of IVF treatment

It might be possible... some women, who previously used medical assistance to become pregnant, do sometimes become pregnant on their own later.

Could also be an off period. You could wait and see what happens with your period next month, and test again if necessary, or see your doctor sooner and ask about having a blood test done.

Thank you for the reply I saw doctor today who requested HCG blood test. Will get result in 2 hours. She also suggested that if the result is negative I should take medication to bring on the period and then get harmonol test followed by treatment. I was a bit doubtful. I have heard that even during pregnancy HCG levels can be low and not show in blood test. I think I will wait for another week and get test done again, instead of forcing a poeriod... I just might be pregnant!