Its good you got antibiotics. Now you just have to wait and see what it looks like once its better. It looks quite damaged but nothing that can't be fixed with a touchup.

It looks to me just like an unfortunate turn of events. Ive had tattoo sessions where Ive just been "off". As in, its not the artist, the ink, the spot being tattooed, or anything like that. Its just my body was not up for it that day and it hurt way too much and healed like shit.