Is it necessary to have previous birth medical records?

I'm going to see a new doctor and am wondering if I should have my OBGYN and birth records for my 1st pregnancy. I weigh a lot less than I did with my 1st pregnancy. I'm wondering if the records would be helpful in my future pregnancies or if it is unnecessary since my health is in such a different place. I had some blood pressure issues with the first but am now off medication. The first birth was tramatic and I would prefer not to have to go into the office but will if it is necessary for me to have the records. Are they useful in future pregnancies or is enough/better to give current info for new doctor and what I know from previous pregnancy? Thank you.