me & my partner are ttc i had my implanon removed about 2 months ago now due to having a period every other week, ive had unprotected sex since few days before the removal up until now ,when it was removed it was 2 weeks late on my period & it only lasted for 2 days, my second period was 16 days later again only lasting 2 days usually my periods last for 5-7 days, im constantly bloated,tired , headaches stomach cramps & back ache ive also put weight on ive done hpt & it keeps coming back negative any ideas what this could be?