Swollen lymph nodes?? No cold or fever

A few month's ago i use to get this constant swollen lymph nodes at the top of my throat made me feel like i couldn't breathe but i never got sick. Then i got pregnant and was pregnant all through the summer and hadnt had it. And has started again like last month. But still not sick. What on earth is this? Ive been meaning to go to the doctors but ive been working and going to a million appointments. But theres been no other symptoms. Just weird though