DS2 is 16 weeks and had his second set of injections last thursday and has been severely constipated ever since only having 2 poos about the size of 5p pieces that took him about 10 minutes to produce . He is seeing a chirpractor who has adjusted him this week but she said he might have to go to the GP if no poo by Monday to get some lactose to help him go. Anyone else got any experience of this. He seems very uncomfortable and isn't sleeping well at night at the minute becase of this.