AF due August 10 dying to test

Katelynn • 29, married, mom of 2 beautiful baby boys, one is a newborn and the other is 2 years old
My hubby and I have been trying to conceive baby #2 since Mother's Day. This cycle was the first one we really went all in. The first couple we tried to follow fertile days, but didn't do the best around work and almost 2 year old little boy. This was the first month we did it almost every fertile day and a couple before them. We also managed to get the 3 highest percentage days. I truly don't know how much more we could have done. 
AF is due August 10 and I have been having lots of symptoms including: severe lower back pain, fatigue, nausea, heartburn, cramps, hot flashes, slight boob soreness and moodiness.
The only one of those I get with AF is cramps the day she comes.
I'm dying to test, but promised myself I'd wait  until the 10th to test. I'm too afraid of getting discouraged by a negative if I test too soon. 
Anyone in the same boat?
Any suggestions on how to stop overthinking this?
I really believe I'm pregnant but so scared to not be.