What is this ???

Abby • Child of God✝️. Happily married 💍. 23 Yrs old. 💖👶🏼 DD 3rd May, '16. 💙👶🏼DS 22nd Jan, '18. DS 9th April, '19💙👶🏼 💖👶🏼 DD 17th Dec, '21 🤰 pregnant with #5 BOY 💙

Guys I'm so worried something is wrong with my progesterone levels. I've been having such a difficult time ttc the last couple months due to my husband having a vasectomy reversal and then a few thyroid issues (all corrected now).

Why is my temp this morning so low ?

Some research says it could possibly be a sign of of implantation?

Im not sure what exactly that means as this is my 3rd time using bbt.

Somebody please give me some hope ☹