I am a 28 year old female. I have a 28 days cycle period. However, in Feb/march, my period went on to excessive bleeding for 15 days and I was prescribed with norethisterone and referred to an internal ultrasound scan. The scan results were normal and my GP advised me that I have a thick uterus lining. After completing norethisterone, I came on my period on 13.04.2017 which lasted 5 days. I am now 12/13 days over due but having done 3 home pregnancy tests, they have all come back negative (the last one I took was yesterday afternoon). I am experiencing sick'ish feeling but have not urged to vomit. I am feeling dizzy today. I have mood swings and feel bloated all the time. getting very constipated also. I don't know what I should do, can you please advise?