Questioning paternity wtf

Red highlighted week is the time(cant remember exact day) I had breakup sex with my ex.

Green highlight is when I met current partner. All ultrasounds and data points to current partner being the father, but he is mixed and our son has come out very light skinned looking like me not him.

Now everyone is questioning paternity and I'm going insane. 😔 We will do a paternity test asap and he did not sign the birth certificate.

I didn't log sex/symptoms accurately at this time so please ignore the random check marks and hearts, but the period info is accurate.

Please tell me your opinions. This is so horrible to go through