Hi Salma,
Welcome to Crohnsforum. We are here for you.
Your mood swings can be explained by some meds you may be on, the diagnosis, or your illness itself - even all three.
It is extremely easy to be frustrated now that you know you have a chronic condition. The good news is now you know. This means that you arent just banging your head against a wall in the dark (well maybe not quite so much anyway)...... and you can tailor your treatments toward the goal of remission. Many folks go through many different feelings after they receive a diagnosis. These feelings can include saddness, depression, questioning, anger, and more. It takes time to work through these feelings. Hopefully Crohnsforum can help you with this.
Your meds may also partially explain your anger and mood swings. If you are on a steroid therapy like Prednisone , which is very often prescribed for Crohn's Disease , it can cause mood swings especially at the higher doses. If you have recently started taking the prednisone these effects may be heightened. Some people only feel these symptoms for the beginning of their prednisone course and others might have to wait until they start tapering off their prednisone before their mood begins to stabilize.
The fact that your immune system has been overstimulated may also cause your mood effects. You may also feel inattentive, an inability to concentrate or think properly, fatigue , sleeping too much, inability to sleep, anxiety, etc. Prednisone can have dramatic effects on calming down your immune system's overactivity and can quiet these secondary effects. I am not sure which medications you are on because there are many meds that might be prescribed for Crohn's disease but hopefully whatever medication you are taking can put you into remission very quickly.
Welcome to Crohnsforum and I hope you are feeling better soon. Please keep us updated on your progress.