Hi Joanne
Welcome to the forum, you might want to have a look at the following FAQ which explains where everything is.
Welcome to Benefits and Work .
You could be right they may want to make an offer or they may want to contact you for more information before they make an offer, you will not know until you phone them.
Before you contact DWP you need to ask yourself what do you realistically expect to receive looking at PIP's strict criteria, when you contact DWP and they do offer a lower award, if you think it's too low then tell them and explain the reason why, get yourself prepared before you make the call, call them in your dinner time or when you get home from work.
Gary