Is my tetra bearing eggs or sick/infected ?

[TropicalJane]

Hi everyone, recently set up a 105L or 28 US gallon planted tank with fluval strat as a base layer with aquarium sand on top with 6 or so various plants and a driftwood centrepiece. I cycled the tank for 10 days atleast before adding 4 mollies, waiting a week and adding 6 flame tetras and three guppies. I then waited another week and added two Kuhli loaches. I heat my tank at 26 degrees Celsius 24/7 and keep the light on for around 10 hours each day. My fish are fed twice a day with flakes and a small German food for my loaches.

Sorry for the long introduction just wanted to ensure there was lots of information.
One of my tetras has a large bulge on its underside which is different to my other tetras so I presume it is not necessarily overweight however may be bearing eggs or have an infection. I have attached some images please let me know asap! Thank you all.

 

[TropicalJane]

I also forgot to mention the tetra often stays low at a corner of the tank but often comes out for food or a swim which also led me to believe it could be pregnant. This is my first tropical set up and would appreciate any advice given!

 

[Colin_T]

Probably just likes eating. If it gets bigger or changes shape, post more pictures.

 

[TropicalJane]

Will do, thank you!