On the advice of HV i changed from sma gold to white for hungrier baby. Her suggestion was made to encorage DS to go thro longer between feeds. DS had always been a bit sicky but now its really bad. After feed he sicks up immediately, then developes stomach gripes and continues to sick up 2 hours after feed. DS is in a lot of pain during these times and can never be put down flat in cot/ buggy. The sick is watery with cottage cheese lumps. DS is 13 weeks. I'm making an appointment at GP as my gut feeling is that something is up. He's my 2nd DS, my 1st was a sicky baby, but this is much more severe. Any advice?