hello sweetheart,
i think you should go to the doctors, get a blood test or do a pregnancy test to see.
if you had a miscarriage, you would know! so i dont think thats it.
the same thing happened to me in april, but i wasnt pregnant nor was it implantation bleeding.
like i said, if you worried- go to the doctor and find out for sure, if you get yourself worried then your mind can play tricks on you; which could be the feeling sick in the mornings. and i dont think you would go up loads of bra sizes in such a short time.
how old are you?
well let us know yeah?
take care
Bernardette x