this is a long one but i hope someone can help. my friend called to see me this morning and said she wasnt feeling well. we are great friends so joking i said yea you might be pregnant and come to think of it you do look pregnant what with that big tummy!!!! im fat and so it she so we joke about it all the time.(looking pregnant) she burst into tears and said she thought she was. she has not had a period since december but took two tests last month both neg. i gave her a cheap test like the gp uses and it came up neg too. she did the tesco tests last month. i must admit im no midwife but her fat tummy looks a different shape. could the tests be wrong. would an expensive digital be better?? do pregnancy tests only work for a few months the give negs after a certain time even if your pregnant or would they always show positives.