I Had Sex With My Guy On 7th, Just After

I had sex with my guy on 7th, just after I finished with my periods that was 6th. And I took an ipill on 9th Bcz I was not sure. I am having vaginal bleeding from today 16th. So is it normal? Do I need to take a pregnancy test? If yes when? And how I'll it effect my periods? It's the 1st time I have taken ipill so I am not sure. And it was the first time I had unprotected sex also. So I don't want to take any chances. I don't want to get pregnant at all.