Symptoms at only 5 dpo?

Sarah
My fertile window was the 2nd through the 7th. My boyfriend and I had sex multiple times a day on the 5th, 6th and 7th. We didn't have sex on the 2nd, 3rd, or 4th. AF is due on July 20 or the 21st. And my cycle is normal 28 and my period is 6 days.  
​I have been having weird feelings in my stomach, I'm overly tired and out of breath. I'm also eating a bit more than I normally would. I know god sounds like PMS but I never have PMS like this. I haven't had sore breasts or CM. But on the 6th (the day I ovulated) I had a pink tinted CM.  Not knowing if I'm pregnant is driving me insane.. I need some second opinions please.