By Caitlin Griffin A woman whose symptoms were dismissed as minor is now urging people to persevere when seeking medical help after she was given a devastating brain tumour diagnosis. Claudia Laird, from Burnley, was going through her nurse training when out of nowhere she started feeling very tired and puzzled. She even began walking into windows thinking they were doors. At only 24, she blamed the night shifts for her tiredness while friends labelled her a late riser. She visited her doctor many times but her symptoms always pointed towards either stomach bugs or side effects from the contra…