Dumb question

So I bought this huge pack of the easy at home ovulation and pregnancy kits in 2018 and got pregnant within 2 months of using them. I had tons left and now we are ttc again. They say they expired February 2019 but will they still work? I took this ovulation test today and it was negative but im predicted to ovulate in 4 days. Do you think it will give me accurate results or should i just buy a new kit?