Help please

Brianna
So I have poly cystic ovary syndrome. I never would get my period. I've gone 8 months without having one. My ex and I broke up in December, I started having regular periods since January. So January, February, March, and April all on time. It was supposed to start on the 7th of May but hasn't come. I'm taking a pregnancy test tomorrow but I'm scared it's my pcos acting up or sympathy symptoms for my friend that is pregnant. I am hoping I am pregnant. I been bloated, tired, emotional, have some cravings, some smells bother me. But in the past I have gotten symptoms just because someone was pregnant around me. That was back when I wasn't getting my period at all. What do you guys think?