I'm late... could it finally be?

Hi! We have been trying to get pregnant for almost a year now. I have been very consistent on periods but now I am 4 days late. I took a hpt the day after I missed and it was negative. I've been a bit more moody and noticed my boobs look bigger than normal, but other than that no cramps, pain or sickness and no sign of my period even trying to start. Should I test again? Or did I just miss a period?

I really hope I am, but scared I'll be disappointed again. Thanks