BBT help

Alaina • Married 9.10.11 👰🏻 Angel baby Joseph 5.29.17 👼🏻 Rainbow baby Alivia 2.4.19 💗 Fraternal Twins James and Josie 5.2.20 💙💜

Can you BBT experts help me understand this chart? This is my first month charting and I didn’t start until the middle of my cycle, so just looking for some help.