how many cal's right after surgery?

when we are first post op, how many cals per day are we supposed to eat?  i started my "going back to basics" last Thurs and thus far have done good.  No snacks, no eating after 6pm, getting in more water, exercise etc.  when i weighed in Monday which is going to be my weigh in day, i'd lost 7 lbs. i know thats not normal and it'll slow down but thats ok. eventually it'll come off.

I never counted calories. Just aimed for 70 g of protein a day and 64 oz. of water!

Well I'm good on the protein then lol. Thanks!

I really tried to think about this. I am thinking 300-500 cal a day ?????? It has been a while! Easy to forget. I am almost a year out now.