I'm a 15 year old girl and I have to get two shots tomorrow are they going to weigh me?

I'm going to a health clinic not a doctor so its a nurse and I am not smallest person are they going to weigh me or no? and if so can I say I don't want to?
I don't need someone telling me I'm overweight I already know that and I'm doing what I need to do about it and I don't need anyone else telling me
So are they going to weigh can I say no if they are?