Fairly general question... I started couch-5k a few weeks ago. Had done week 1, but then pulled a muscle in my neck and couldn't do it for two weeks. Started again but am now 5 weeks pregnant. Not hugely fit (hence couch-5k). Do you think it is fine to continue, just making sure I don't overheat/overdo it as it gets harder?b Also taken up swimming but I think that is fine. Thanks!