Could I be pregnant?

So on my last period, my bf and i had sex on the first two days of my period and both times he came in me... I've been having a few pregnancy like symptoms but idk if it's just a coincidence or not. My glow app Says I should be having it within two days but only symptoms I been having are sore breath especially my left one. I took a test but came out negative. Am I freaking out for no reason?!!