AF due today!

So I took a hpt (FRER) on 10/4 and it was vvf today 10/6 also vvf idk what to think. Last month I had a chemical pregnacy. I'm nervous it will happen again. Although, Last month I took a test a week before AF as this time I waited two days and day of expectating AF. Has anyone had the same problem of low hcg right around period time and line darken? I don't want to get my hopes up! I do believe I ovulated late this month! But I'm not exactly sure!