What do I do?

I am just over 11 weeks pregnant.

At the start I was having pains, feeling / being sick, barey able to eat, couldn't drink fizzy drinks, etc...

Within the last 2 weeks the sickness is gone, I can eat normally, I can drink fizzy drinks and I don't even feel pregnant.

I've been having lower back pains and pains at the bottom of my belly.

I've been told by my mum and sister that they've had this before and lost a baby.

I have my 3 month scan in 2 weeks - Should I book a private scan for £80 or wait the 2 weeks ?

I haven't had any bleeding, Is everything ok? Has anyone experienced this before? Is this normal?