Yes you need to take an rmd for 2017 anytime until April 2018. Not sure by what day. My husband also turned 70 this year and already took his. Only the first year do you have until April the next year. So if you wait until 2018 then you will have to take 2 TWO rmd next year. Both the 2017 RMD and the 2018 RMD. So I recommend taking it by Dec 31.
Not sure how it works for 401k multiple accounts. You do have to figure the RMD on both. You might be able to take the total for both out of one account. You can for IRA.
