Others have far more experience than I. That said, it's near impossible to tell. I know we've had snakes lay eggs we had no idea were gravid. Size of the eggs, and number is an issue. Also the size of a snake. A big female with 6 small eggs will be hard to tell. When a snake has a nice big clutch and not over weight it is easier.
There is an odd widening in pic #3. Lot's of question will come working off a picture. last time it ate, what size, last time defecated etc.
In a general guess I'd say no, but as stated the pictures don't show off the snake as needed for ppl to make an educated guess.
Photos straight down with the snakes body not touching itself in a coil. Angled pictures add a perspective view to them, and also the snakes body will start to hide other portions of its body. IF an angle picture the snakes body should be in line with the shot. Then you have to worry about DOF to make sure it is all in focus.
Hope it helps a little.
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Thanks for reading.
Big Tom
www.HerpZillA.com