DS now seems to have a cold. He is really snotty but it's all at the back of his nose and throat. I've got one of those nasal aspirators but it doesn't come out of his nose to the point where I can suck it out. He seems really distressed by it and I can hear it all in his throat when he's breathing. Is there anything I can do? At the moment he is managing to breastfeed but I'm keeping an eye on that.