Did a chemical throw off YOUR ovulation?

Last cycle I had a chemical pregnancy. My period came 4 days late... that means my cycle is offset by 4 days right? Glow predicts ovulation in 3 days but I'm having EWCM today. I don't think Glow adjusted my ovulation days after my chemical. I know I need to use OPKs but in the meantime, should I BD today or wait til Glow says?