Am I being dramatic?

So I haven’t been driving for that long and I went onto a busy road the other day and I came across a cross walk and so I had to stop just before the chick walked across i had to quickly stop cause you can barely see the cross walk until like 2 seconds away and it’s like a 50 zone there. As soon as I stoped I didn’t realise there was a bus right behind me and It nearly crashed the back of my cars ass. And I was really scared after that cause that never happened to me before and I have only been driving for a few hours. When I got home I was crying to my mum shaking because it terrified me she said I was being dramatic and I should grow up.