Help needed in diet improval

[uli97]

I will try to make this as short as possible, for the past 3 years I’ve been suffering GERD until I had the TIF incision less surgery done in late December 2010. Next 2 months have been heaven but I started noticing new symptoms arising soon after, such as:-
-Difficulty in fall asleep at night which I assume is due to the air being swallowed.
- Frequent Diarrhea and gaseousness and weirdly, it only occurs after lunch time, I have to include that I consume (lentils and Orange juice during and shortly after lunch time)
-Sour taste back of my mouth/throat.
-Fatigue, I’m always exhausted even though I sleep the required 8/9hours a day.
-difficulty burping even when I feel food is stuck in my throat I feel burping just brings it even more up. *I can burp even after the TIF procedure but sometimes I assume it’s impossible due to the food that’s stuck or regurgitated*
-Shortly after consuming water or any other beverage I feel it splashing back up high into my throat.
-Occasional nausea include excess salivation and relieved sometimes by spit up.
A typical days diet: - Morning, cereal with whole milk followed with 2x200ml Galaxy Chocolate milkshakes. Afternoon: - Grilled fish with rice and lentils followed up with orange juice. Mid-noon snack:- 3 Fried chicken fillets followed with more Orange juice. Dinner: - Stir fried chicken with vegetables and soya sauce and cream of mushroom soup followed with a cocktail juice drink.
I typically will nibble on some chocolate bars in between (1 or 2 MAX) and lots of water.
I have been also diagnosed with (Irritable Bowel syndrome) after theoretically describing to my Doc about symptoms such as the Diarrhea and flat tight abdomen in mornings accompanied by nausea.
All I need is how do I place the perfect diet, would I appreciate some suggestions!
Most importantly I’m a 19 year old adult, other features= 5foot8 and 63kgs so I’m dying to put on more weight...Can I use weight gainers for example!
Plz help
Thanking you in advance

[patient915]

I would recommend that you eliminate all citrus, chocolate, and lactose and see if that helps.  You should consume your water slowly throughout the day.

[uli97]

Prior to the TIF procedure, I've done an endoscopy, 48-hour PH monitoring and the barium swallow after the surgery on the same day I've done the Barium test again which was as my doc described its results as perfect.. Im struggling in placing the idle diet although I consume daily orange juice and chocolate milkshakes& bars my doc says that it okay..but every morning i get nausea and get frequent dirrehea..Is it okay to consume water after meals or does it disturb the stomach in terms of acidity and all that?..

[patient915]

What tests have you had?

[uli97]

Forgot to include, I still take 20mg nexium/day which I assume has lost its effectiveness..