pregnant? stressed?

So here's a little back story. 
I have PCOS... I had a period every 4 months or so. I changed my diet and have had my period every month for over a year now maybe one day late. 
So now me and my husband use condoms everytime we have sex, I'm not on any type of birth control that is our only protection. 
I'm three days late in a few hours and have never been late this late before has anyone had this happened to them? The only "symptom" is boobs are sore, not bad but its noticeable. 
If anyone was wondering this was the picture I took. Just in case. Lol