Ovulation stick problem

Theodora • TTC # 1 IVF 🙏 Unexplained infertility/endometriosis

I am writing because I only have five strips to test if I’m ovulating to hand and it has taken me a while to find them considering I am in another country at the moment. I am supposed to be ovulating on the 22nd, according to Glow (and I have been doing my log every morning I even managed to find a basal thermometer) But what if the date is slightly off when should I test should I test the day before or the day after and how long did the results from laying in the body (as in how long will your body release hormones showing that you’ve ovulated in the past day or two)?