I've only just found out I'm pregnant yesterday, still very early on at 4 weeks. For the last 3/4 days I've had awful cramps and thought it was AF starting. I've now narrowed it down to when I have a full bladder and it continues for around 10 minutes afterwards. Once I've been to the loo it eases off and I'm fine. It's really strong, similar to period pain but worse than I've had. I'm a bit worried and wondered if anyone has experienced similar.