I'm scared

I'm new in this thing of having sex, and the second time we did it was without a condom and he told me he didn't came inside and I was a little but relaxed because I hadn't ovulated yet, it was like my first day after the period, and like 3 days ago we were having sex and the condom got stuck inside, but he said he didn't came in it, and my app said the day was a low chance of getting pregnant! My next period it's in 6 days and I'm really scared!! What do you think?