Hey guys. I'm a new Betta owner and I am concerned about Terry. (My Betta). He is my first Betta fish and I have had him for 3 days. He lives in a 3 gallon tank along with 4 bamboo leaves and real aquarium gravel at the bottom of the tank. He has no filter or heater as of yet since I can't afford it atm, but I have read that heating and filtering is essential for him. I test his water PH every morning and evening and I have changed 30% of his water every morning so far. I have yet to buy an ammonia test kit, but I will soon. My concern is that he is swimming with a slight curve and his tummy looks slightly swollen. I think he may be constipated so I will fast him for the next 2 days. He is also swimming a little less than when I first bought him. I have noticed that he rests every couple of minutes on his bamboo leaves which he didn't do yesterday or on day 1. I hope I'm not being paranoid about his health, I just really want him to live a happy and comfortable life. Even though I have only had him for 3 days, I love him lots and he loves to rest near me all the time. Oh, I have also fed him 13 pellets in the past 3 days. 5 on day 1, 4 on day 2, and 4 today. The Pet store man told me to feed him 5 every day, but I think he wasn't accurate about that. I will post pictures of what he looks like in a bit. Thank you guys for your help.