Can I be pregnant???

Abbey
Background info:
I'm not sure exactly what day I ovulated, my green days on Glow were July 13-19 & July 15-21 on eve. I had sex on the 11th, 20th, & 22nd. My period is expected this weekend, the 31st. 
On & off for the last 6 days I've had a dull backache, feelings of fullness & tingling in my breasts, slight indigestion, & just an overall kinda weird feeling in my belly. These feelings are stronger at night. 
Since I've had these same symptoms for several days in a row I've started to suspect that I'm pregnant. Honestly I started to suspect it on like day 2, lol. 
Do these sound like pregnancy symptoms to y'all? Is it too early to test?