Kavod harav, I just learned (to my extreme surprise) that according to the Chazon Ish, as brought in Orchos Rabeinu, vol. 2, p. 94, one who said Today is the first day etc. is NOT yotzi sefiras haomer (he needs to say Today is one day, as opposed to first). However, up until now I did not know this ruling of the Chazon Ish, whose rulings I am generally particular to follow, and have been counting "first," "second," and so on (as I count in English). May I continue counting in the future with a bracha, even though in the past I was (apparently) not yotzi? Thank you.
Shalom It would appear that since there are different opinions in this question that you can continue counting. Kol tuv