is it just me or is this normal

so I use to love give my man head he the only man I ever loved to do this to I use to here other people talk about how some guy had the prettiest dick before I didn't understand untill I got with my man we been together for going on 5 years and I was addicted to giving him head all the time and I would get off with out him even doing anything even my mouth would feel like it would get off to but this past year we really don't have sex any more maybe once every other week and so he gets two nuts and I don't even get off anymore now when I do give him head it makes my stuff hurt and I don't know why and once he gets one he good for another week so I just stop all together cause it hurts to bad to give him head so does anyone goes through this what should I do