I started taking sertraline 3 weeks ago at 25mg , have been on 50mg for a week now. There are minor uncomfortable side effects, but a big change in my anxiety, so that's alright! However, I've been experiencing severe stomach pain in the early evening that lasts for 3-4 hours. No vomiting/diarrhea, just severe pain in my stomach. I take this med in the am, with breakfast. Please, does anyone have advice on how to avoid this? the pain is comparable to childbirth pains, except constant, and the following morning my stomach feels weak and achy from all the cramping.