Thank you! Me and my bf were together all of December
It's still possible, but not likely, that it was the first guy.
Most likely it was your boyfriend if you began having sex with him around or before Dec. 3.
So my boyfriend right I was with him all of December and only once with someone else on November 28th.
You probably ovulated around Dec. 6.
So, whichever partner was closest to that date is probably the father.
Legacy, you're going to have to offer more information than that to get a helpful answer.
Do you have a due date?