I had sex morning of ovulation

Ajaa • Romell's Mama (3 year old) 🤞🏾😍 Ryan Wife for (4 years) 🤞🏾😍 👶🏾 Aubriel's Mama (newborn)

Hubby and I had sex morning of ovulation, I went and got a plan b the next day. My period is today but it's a no show of aunt flow. I am having breast tenderness, lower back pain and headaches. I don't know if this has to be because of the plan b but I took a pregnancy text it was negative. Any ideas 😬