Hi .... its sooooo very hard to give an answer for abdominal pain over the internet... Abdominal pain can be caused by so many different Aliments....
Suggest you meet with your Doc to discuss the concern...
Could be anything from "not going to the toilet regularly" toooo a "Hernia.." etc
Thank you I will look into all of that!
It could be related to a food sensitivity. Perhaps you are using a lot of soy and have become sensitive. Try restricting that. Stop dairy if you use that (I don't know vegan rules). It could be gluten, but don't stop that until you get tested for Celiac disease. Perhaps you have yeast overload from antibiotics and/or too much sugar in the diet.
For quick relief, try a prebiotic or probiotic. Lots of people use Align. I use PB8.
Perhaps it's parasites. You don't always get them from meat. You could try a natural remedy using artemesia, walnut husk, etc. Health food stores have them with the cleansing products.