Am i pregnant?? HELP

Sooo.. My last period was last Thursday.. since then ive been having sex every night and tonight around 10pm i went pee and there was light pink on the toilet paper. I freaked out and talked to my boyfriend, he says im not pregnant but im still scared bc i know its still possible that i can be. I looked up some things on google and it says that it can be implantation bleeding or it can also be bleeding from stressing. I have been stressing out alot for about 4 days now so can it just be that im stressing or can i really be pregnant???👀🙈🙊