Is strange if I use the expression "If I'm not wrong" when I'm not sure about the info I'm giving? This is just an attempt to "transplant" a mother tongue expression, "se eu não me engano". I just wanted to know if makes sense, if ppl commonly use this expression, and stuff. Actually I often use this expression, not necessarily with English native speakers but I have no idea if that's ok or if makes sense. Lol. I also would like to be corrected if I made any mistake in here. Thx.