Hi I have had a problem with my period from a young age I would always miss one month. I went to see a doctor when I was 21 years and was told I will not be able to fall pregnant but after a few months I did,but nw I missed my period for 8 months and i took five pregnancy test which was all negative and then I ended up having a infection and took medication but after I was done taking the medication I got my period and which is more than three weeks and have a lot of blood clots.