Prosthesis - I can’t stop crying

hi all
so my story is found a lump in feb, lumpectomy in March, sentinel Node op in April then mastectomy And lymph nodes removed on right breast in may
i am very lucky in that I Do not need chemo nor radiation and have started on tamoxifen 
Today I went and got my prosthesis and a couple of bras.  I have/had big boobs but this seems ginormous
i feel that I shouldn’t be complaining  about this but I have cried all day.  I hate it. I really do. Is this normal?  Will I feel better?  Right now I wish they removed both breasts and I would have just dealt with that. I would like to get a recon but that’s minimum 12 months away
i am so sorry for complaining but it has all hit me today

does it get better?

thanks

lisa xx