If you have lost a pet and need somebody to talk to, the Blue Cross has a Pet Bereavement Support Service. Their website has lots of information, including:
Contact the Pet Bereavement Support Service on 0800 096 6606 (UK only including Northern Ireland). The support line is open from 8.30am – 8.30pm everyday. All calls are free and confidential from a landline. If calling from a mobile phone, some phone networks may charge. Alternatively you can also email the Pet Bereavement Support Service on pbssmail@bluecross.org.uk.