Breastfeeding troubles

Anabel • Danny 10.17.18. Jayden 11.16.21.

Ive been breastfeeding my baby since day one. He is currently 17 days. For the last couple days he has been very fussy during nursing. The first coupl3 minutes hes eating fine. After about 4-7 he will start complaining grunting swinging his arms and pulling at my nipple. He looks frustrated and fussy then begins to cry. Has this happened to anyone else? I havr an appt with a lactation consultant tomorrow. But i am getting a bit stressed since i know he is not eating enough