So confused...

I’m 16 and do not want to be pregnant, had sex on the 2nd was really scared I was pregnant so did a test which came out negative. On the 9th and 10th got some light bleeding. Think it was my period but was worried about implantation bleeding so took another test which came back negative. All was ok then until 17th when I had sex again, and the condom split. Took the morning after pill about 13 hours after and am now bleeding on and off. Just so confused, don’t know where I am in my cycle and would love some opinions...