If You are worried Hun, You can speak to Your doctor about Your cycles there are many reasons
Every body is different some people always get there periods every seven weeks. But even if it is abnormal for someone it is sill normal to have fluctuations in your cycle length, flow and so on so it's typical that we all have an abnormal for us period every now and then
I'm getting my periods every seven weeks is it normal coz this has happpened twice now
In pregnancy or in general'?
You could have a delay in Your periods for many reasons such as stress, change, psychical problems etc
And people can also experience periods throughout pregnancy