I wouldn't say it's normal, but it would be an expected result of feeding a heavily gravid snake. I stop feeding the female after she goes blue for her pre-lay shed, and do not feed her until the evening of he day she lays, or the next day. The first meal I feed after laying is a couple fuzzies or a hopper, and then a weanling a couple days later, and then go to a small adult mouse (20-21 grams) every five days until the female gets close to her pre-breeding weight. I gradually move her to every seven days with a 24 gram adult mouse, and then every ten days once she is in prime condition again.
For next year, after you have completed the breedings, it's a good idea to do regular exercise with the female. Get her out for 10-15 minutes every evening and have her crawl through your hands or around on the floor, over your fingers. Stair climbing and swimming would also be beneficial. Be careful not to let her fall. As she becomes heavier with developing eggs, you can and should continue to exercise her daily, just keep things very gentle. Place her on the floor and encourage her to crawl over things like your hands so she is using her belly muscles. After the female goes blue for her pre-lay shed, I discontinue exercise for the blue period, though if she seems calm I may take her out once or twice after the shed for a very minimal crawl-around.
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