I have been on contraceptive for 6 months and I have stopped a year ago...I stopped because I am trying to convince..my periods where normal after I stopped with my contraceptive injection but after 6 months I didn't see my periods I thought I was pregnant and I took pregnancy test and they came negative...few months later I went to the doctor to do follow up I was still not pregnant..the doctor gave me a packet of hormones to boost my hormones and to get my periods back.after I took those pills I saw my periods and later after 7 weeks I got a spot of blood thinking that its my periods and it stopped...what could be wrong with me please help