😭😭oral is so hard

So I'm a virgin my man is not, not to long ago I gave oral for the first time and have done it like 5 times now. He's very thick and I gag early. He'll put his hand on my head and have me deep throat and I just want to throw up,

Cuss I can feel it all the way back. I mean I like pleasing him i just hate how I can't take it without gagging super bad to the point where I almost thow up. Im usually relaxed but breathing while giving head is hard, how y'all do it😭 lol