Hello girls. I'm having my first pregnancy, it's only just begun, 6 we…

Hello girls. I'm having my first pregnancy, it's only just begun, 6 weeks along. My belly looks like it's at 4-5 months (The doctor says strong bloating, but I haven't seen anyone with this. Can you please tell me if anyone has experienced this? Is it normal? I'm already wearing size 5 jeans and they don't fit anymore ? I weighed 50 kg before, and now (because of this belly) I'm already 54 in a few days).