I have had this female in a tank with one male and another female. i just purchased two more swords and also got a breeding box. Just stuck her in there today because she is showing signs of pregnancy but am not for sure. Can someone please help settle this for me?

My tank is in it's 4th week of cycling and I am just looking through different fish and I thought I would get some opinions on what kind of fish I could get if I wanted a small community tank. I live in a dorm right now so I can't have a tank larger than the 10 gallon I have, so what kind of...