The fact you're here asking leaves reasonable doubt. Or at least some concern.
Next to becoming a child of God, it is the most important decision you will ever make.
Praying is best, which ever way you decide.
I think you will know, by the spirit leading and waiting on the Lord.
Being nervous is normal, so I would give it to God, and listen to your spirit.
May God bless your decision.
PS
My wife (of 50yrs) says to date no less than 6 mos,
and do not decide till you have a real peace about it.
Sower's post in Unsure of my other halfs salvation was marked as the answer