Deepthroat Gone Wrong

My bf has a dig dick. I little bit wider than average but much longer than average when measured just under 9 inches. We have been dating for about 3 months now and a couple times he has asked me to try and deepthroat him which I understand( you got a big cock you wanna see disappear into a mouth) porn and what not. So I told him i would try in the shower next time he wanted BJ. So that time came a couple day later and asked me again you ready to try and I said sure. We hopped in the shower and while he was still somewhat soft I tried to fit the whole thing in and I DID IT. I was kinda proud of my self but as he got harder and harder it became clear this was going to be quite the task. Whit his 9 inch rock hard cock in my face I started sucking try to go deep and deep each time, with him moaning and saying oh yeah babe suck it deep i went for a big plunge down his shaft. At that same time he grabbed the back of my head pushed which then made me go all the way down to his stomach and balls. The unfortunate party is exactly why I said I would try it in the shower as his cock went down my throat i ended up puking all over his cock and balls. It started out well but i was so embarrassed I didn't suck his cock for a month I was upset and kinda didn't trust him for a bit but we are all good now.