Lip tie

Sierra

I think my son may have a lip tie? His latch is pretty good but his upper lip doesnt turn out even when i try. He falls asleep so easily and so often when feeding its a hassel hes never stayed awake a full feed. When i tried to flip his lip to look he cried :( but it looks like its running down and over his gum. Sometimes he does pinch my nipple (i correct his latch tho) does this sound like a lip tie?? I know its hard to say without a picture