How to continue practice with pain?

I practiced meditation for 6 months continuously. I used to meditate 45 mins in the morning as well as evening. In weekends, I used to meditate many rounds with breaks in between. I developed fear of loneliness due to which I have suffered from insomnia which has lasted till now though it has gotten a bit better now. I don't know if its dark night of the soul or depression. I have also been suffering from gastritis since 1 year. The stomach pain causes me anxiety and I have not been able to continue my meditation. I am waiting for both my sleep and stomach to get better so that I can continue. I sometimes feel that the problem will last till my death. I don't know how to progress from this phase. My meditation practice had definitely brought many positive changes. I have set milestones for myself regarding the practice that I think I may not reach during this lifetime. Any suggestions for me ?