NEED ADVICE ASAP

Question for mom's who have went through this already: I went to the Dr had a ultrasound I'm 35 week's 5 days son head is measuring at 40 week's brain function is good, he's 6lb 13oz already I'm not due till March 24 Dr said his head nd body kind of match up his head is just a little bigger he's just a big baby. My husband has a big head all the boys in his family have big heads but that ultrasound picture nd measurements are scaring me. My Dr said I won't go to 40 weeks she wants me to try nd induce labor naturally on my own I can't get Medical induce cause I have had a C-section I will be having a vbac. Question is should i be worried??? Has anyone been through this or no someone who has been through this??? Thank you very much for your advice.