Hi I'm 38 years old female and my sister who was one year younger to me was diagnosed with breast cancer 6 years back. She died in August 2011 due to breast cancer. I have done my cervical smear test and the results are normal. I don't have any lumps on my breasts or underarms. But a couple of months back I've noticed a small lump on my left groin which is not painful. I've shown it to my doctor who thinks its harmless lymphnode or hair follicle. So far I've been getting regular periods with 25 days cycles but since last month my period was 30-35 days. I haven't yet got my periods for this month and its been 33 days. Im concerned and would appreciate your advise.