Possible Pregnancy Before VR?

My now husband got a vasectomy when we had first started dating bc he has three kids already. I never wanted kids myself so it wasn’t a big deal. 1.5 years later, we both want to have a child. We have scheduled a vasectomy reversal for Feb 1. Today and yesterday I have been having weird symptoms like I’m about to start my period. I am 5 days past ovulation and we have been having sex quite frequently.

- Back cramps

- Dizziness

- High body temperature

- Breast tenderness

- Cervical mucus change

- Short breath

- Hot flushes

- Pelvic pain

- Abdomen cramps

Could this be a possible pregnancy?