Tremendous Stomach Pain - Feeling Sick All Day

It started one Saturday night when after a long day of doing overtime at work, followed by handing in my degree dissertation, I could not eat very much going to bed and was waking up a lot during the night because I was hungry, but when I tried to eat I couldn't stomach much. I went to the doctors on the Tuesday and she suggested it was just a bug as I was so tired and had very little energy. She took bloods which all came back fine. I felt a little better a week later but still not right but tried to put it at the back of my mind. However, every so often I would have an episode where I was feeling sick and had stomach pains and I could not each much so I lost a lot of weight.

The doctor prescribed me with domperidone in September which helped for a number of months but stomach was still not right.
Fast forward to 4 weeks ago I wasn't feeling too bad and was managing to get on with day to day life with some limitations (because of my stomach issues, I cannot drink alcohol, coffee or fizzy drinks) so I rarely go out. The doctor diagnosed me with stress and anxiety and I have recently started speaking to a therapist through work.

But basically, for the last four weeks I have been feeling sick all day every day with stomach pains a few times a day which prevents me from getting on with day to day life. It started the day after I had sex and the day after that I had my period as well as a cold. These pains do not seem to be getting any better and seems to help when I have something to eat, but I cannot face eating a lot. For example, bananas help but I don't want to have too many a day as they have bloated me in the past.

A couple of nights ago I woke up with a tremendous pain down the left side of my stomach which then moved over into the centre. I still feel sick but feel much better when I am out and about walking for example, but its just a lot of effort to get up and about when sometimes i do not want to get out of bed.

This condition is stopping me from leading a normal active, well life. I am only 24 and cannot seem to lead a normal life in comparison to my friends who can. The docs still say this is down to stress and anxiety but it has to be much more than that. I get the impression that my parents, friends and work colleagues do not understand and the fact that the pain is constant does nothing to lower my stress and anxiety levels as I always have to make sure I take food with me wherever I go and can't go too long without food.