I have gone through that too if i was depressed..or again like u just not hungry and dont fell like eating...But u have to eat something or u will crash...You dont have to go on a big food bender just get alittle at a time until u feel urself to eat more..and drink lots of fluids,water juice etc.....if u keep feeling that i'd go to a doc. :)
sometimes u can bleed alittle after sex but if it happenin to u all the time and its alot..then u better make a doc app and get checked. But i dont see how a inplant in ur arm about make ur vag bleed..not unless ur having ur period...so be safe and see a doc>)