Need some experienced hatching advice. This is my first go and stressed doesn't even cover it. Day 21 yesterday. 3 chicks out and amazing me. One egg external pip noted about 2 am. Pretty big hole. Could see beak peaking out this am. Had to go to work. Husband checked at 11. I am attaching pic. I have video but don't think that will upload. Beak opening and closing like gasping. No cheeps. Yellow froth around face (see pic). He tilted egg slightly to let froth run into towel. Then set it back with pip hole facing up cheeping now. This afternoon, still in egg. I got home and froth had dried and chick stuck. I lubricated with moist qtips and freed him up. Was totally stuck. Chipped away shell slightly and set him back in inc hole up cheeping, resting some, squiggling some. Gonna let him try to work it out. Humidity increased to 75%. Was running 65-70. Any thought on the yellow froth around face and why that happened? Thank you so much! I am learning soooo much!