How do I gain at least 20 or more pounds?

[Anonymous]

I've been a size zero pant size all my life and I absolutely hate it. I'm not unhealthy but my BMI score does say I am underweight. Is there any way I can gain weight? I eat 3-5 meals a day and I always eat lots of snacks in between. I don't eat junk food and I dont plan on it either. I have irritable bowel syndrome so my food options are somewhat limited. Not too long ago I went on a diet to gain weight where I would eat 6 meals a day and a looot of snacks. By the end of each day I felt as if i would pop. I ate fatty (but healthy) foods like this for at least two weeks and saw no improvement. Because of my stomach issues I'd have the hardest time digesting all the food I was eating so I was super bloated and uncomfortable and sooo constipated that I would go weeks without defecating (sorry lol) even after stopping the diet. What am I doing wrong? Why can't I gain a single damn pound? I'm 19, 5'6 and 110ish lbs and still fit into the same clothes I wore when I was 6.. and it looks super weird having fat almost no where but having my boobs be awkwardly huge. Please help me ):

[Doyoueven]

I'm not sure about your food restrictions, but for weight gain you should focus on eating more carbs, fats won't necessarily help with weight gain. Obviously choose healthier carb options eg. brown rice and not white rice. When working out and you want to add mass (bulking), you eat about 50% carbs. Maybe it'll work for you :)

[Izzex3]

I don't know.
My sister is 25 years old and a size 00. She has been for forever.
Even when she was 8 months pregnant she weighed less than me, lmao.
But yeah. I don't know.
Gaining 20 pounds sounds like a lot. Doubt you'd need to gain that much just to go up in pants size.

[BellePepper]

Have you talked to your doctor about it?

[Asker]

No but my mom has the same issue and is actually even skinnier than me so it seems genetic. I have a fast metabolism but I feel like I should still be able to gain some weight. I'm going to a doctor soon for other reasons but I'll bring it up. Thank you for your concern !

[Krista7]

Try strength training to gain muscle?