Recently i have started feeling ill after i have eaten something, usually a snack or a meal, and get cramps any ideas on what it could be?

Indigestion: Sometimes your stomach and intestines can be sensitive to the normal foods you eat. Theres always a concern for pregnancy in females especially if something doesn't feel right. You could check a home pregnancy test. If thats negative considering a check up with your doctor or trying some over the counter antacids. This might give you a good start for this complaint.