I just dont know

So me and my husband have been trying for about 3 months now. I thought I was pregnant before. But turns out my period was just a week late. Now I haven't had my period again and I'm going in to week 2 without a sign of my period. I am just scared to take a test cuz I dont want to be disappointed if it isn't the result I want. Any tips? How did you know if you were pregnant or not? Help.