Please help... is this what I think it is?

Hi everyone, first post here.

I have a 10g with 1 BN (I know it is too small but I have had a hard time organizing an upgrade) as well as 1 betta- they get along great. We have had the BN in there since December. Specs:
Nitrate 20
Nitrite 0
Trace ammonia at 0.25 we can't get rid of
TopFin 10 filter, cleaned about every month because of brown gunk buildup in the impeller
Water changes/gravel vacs every week

The BN is fed once every few days with either a Hikari algae wafer or a slice of zucchini. There is also driftwood in the tank.

So, the problem is that she is kind of pudgy. I feel like she has looked this way ever since the start of summer, when we first added the driftwood, but I am just now realizing it could be a bad thing. At first she rasped on the driftwood nonstop and so I thought she just had a full stomach from over eating. But this may no longer be the case. What is this- bloat, constipation, parasites? I am very worried. Because of a lack of information, my boyfriend and I had a very rough start to fishkeeping but this girl has survived it all, and we both really love her. I'm so nervous that we are going to lose her. She acts normal in every other way.

Please, if you could help me identify what is going on (wouldn't it be nice if you told me this is normal looking for plecos and I'm just being silly?) as well as give me a course of action. I feel like I should just start with peas (they have to be fresh, right, not frozen?) in case it is constipation as it couldn't hurt. Also, I have not seen her poop recently (I am living in a different city over the summer and do not get to see her often) so I cannot say whether it is white or normal.

I cannot get the images to load onto this site. But if you go to imgur with the extensions /VNgfx and /RIve7 after the com then you will see them.

glad to have you here , the female maybe full of eggs and ready to spawn , if you know someone with a male you can take her over to his house and put her in his tank with the male for a wk or two or untill they spawn. it mite be bloat but i dought it. do you know its a female ?

Hi, thanks very much for the reply. I'm a worry wart

I do know for certain she's a she, since she's about 2 to 3 inches long at this point and doesn't have a single bristle anywhere. (Wish we had known her gender when we named her - feels silly to call a female "Chester"!)

I do hope very much she just has eggs in her. Though, I wish we knew someone with a male. It would be so cool to have a spawn. Maybe one day

Looks like it is time for Chester to go on a "playdate".

where are you from ? and do you have any pics of her ?

I'm from Virginia. I couldn't get the pictures uploaded but I described how to find them in the first post. Unfortunately I don't have any others - I couldn't get one of her on the glass yesterday. She decided to explore everywhere BUT good picture taking territory.

keep us posted on how chester is doing

Hi again, sorry for such a delayed reply but I have been out of town and just recently got back.

I did (finally) manage to snap a picture of her on the glass. Again, if you go to imgur, the extension is .com/ib55J.

Hoping this picture is good enough to see!

If she is egg bound, what will happen?