Hello girls. I have gastritis. Yesterday before bed I drank cold water…

Hello girls. I have gastritis. Yesterday before bed I drank cold water. Woke up at night from strong spasms in my stomach. It still hurts, I don't know what to do. I don't even want to eat or drink. In the morning I drank hot tea, thought it would help with the pain, but I threw up. Before such attacks, I used novocaine, can I take something from painkillers now (novocaine, nurofen or something else?)