I am 24 years old and my mother and grandmother died around 40 from ovarian cancer. I am a month late for my period which has not happened to me before and I have a regular period. I have gained a small amount of weight (maybe 3kg-4kg) in the past 6 months. My lower back is extremely sore lately and I have to urinate more frequently. I also feel like I have constant pressure in my lower stomach. Should I be concerned? What should I do?