My girlfriend is 22 years old and has pcos. She has had it for the past few years. So, as a result, she suffers from irregular periods. The last time she got her periods was on august 22. We made love (protected with a condom) on august 26. There wasn't any proper vaginal penetration involved, not completely. I didn't ejaculate inside her at all. The ejaculation later occurred on her behind, and again, we didn't penetrate completely while trying to have anal sex. We humped and nothing more happened. Also, it is to be noted that the condom packet was purchased last year around and had been stored in a cool place ever since. It was a latex condom from kamal sutra and had a shelf life of 3 years till 2021. It didn't break anytime during the process and after. Now, she hasn't gotten her periods for 3 months. Prior to the last time she had her periods, it almost took her 2 while months to get her periods. Her doctor has provided her with the necessary medicine and she has been taking them. She is not having any symptoms of pregnancy, such as spotting, nausea, etc, except the occasional headache and tiredness which is normal due to her professional work. She is not wanting to take a pregnancy test as she believes nothing has happened. But she still worries about it occasionally. So, is it possible for her to be pregnant, based from the details given? Thank you.