 [ Symptoms ] how can colorectal cancer metastatic or recurrent be prevented [ Disease ] hi i would say it could be the change night work is the pits for our body but do think back been having any unprotected sex of late even you guy pulling out before ejaculation could do it and not all women get the effects of pregnancy so get a test done see what is happening if its negative just put it down to the change of life style and perhaps a bit of stress stress will also do it do hope this helps you good luck