AF due today!!!

We have been ttc#2 for 4 months and this month decided we wouldn't stress anymore. We BD the first day of my fertile window and I think about 2 days after ovulation. So I haven't thought much about it because I was tired of stressing all the time. AF came 3 days early last month and I usually start spotting and cramping a day or two before AF comes. Today is day 28 and nothing!!! My boobs have been stinging a little and my cervix is closed. I'm just scared to get my hopes up AGAIN and take a test. How long should I wait before I test??