Is it common to get bad thoughts in your mind when you start studying Qur'an and Islam more

I am a 16 year old teenager, I actually recently started studying a lot about Islam and started praying salah. But ever since I started doing this, some really bad thoughts about Islam started coming to my mind which never happened before. Sometimes I get so bad thoughts about Islam and my mind just for no reason starts give me thought about other religions so I wanted is it common for something like this to happen to a person who recently started studying Islam and praying salah and I also wanted to know will I be accountable for this bad thoughts if I don't act upon them or believe in them?