Help?

It's my first time using opks. Started yesterday (cd9) tested morning and night and got both faint lines. Tested again not long ago (it's morning in the UK) and got another faint line but I can't tell if the line is getting lighter? Can someone tell me if it is? Or does this look normal? My friend said it's fine just keep testing until you get a positive.. I'm stressing I don't want to miss ovulation. Also, I have started testing earlier than I was supposed to I have 30 day cycles so not really meant to start testing until cd13.