Is it possible?

Moriah.
Hey ladies I'm a newbie! Me and my DH decided that I could come off my bc and I have just had my first period last week and my fertile window was between Feb. 23-27th. I took a clear blue ovulation test and got a negative the first day then Saturday I got a flashy smiley face and had it the rest of my fertile window but never got a solid smiley face....don't know if I missed it or not but we did the do twice during my window. Is it possible I could get pregnant?