Stomach Injury After Fall. For this?

2 weeks back, I tripped on a chain (tied to block the road) and fell on the ground with direct impact to my stomach. I got up and was dizzy and weak for a few seconds and felt like i couldn't walk. At home, i saw my stomach area was slightly red but i felt fine. The next day onward, i had severe body pain, stomach muscle pain and arm pain (after stomach there was impact on my right hand). I thought it would get better after a few days rest, but it didn't so i went to a GP. She examined my stomach and said it is not severe and will get better on its own. She prescribed painkillers and medicine for internal bruising. It is better now but something still feels off. Discomfort has not gone away completely and stomach feels like it's bloated. Upper belly fat seems to have suddenly increased and feels like it's filled with water. What specialist should i visit for this?