Laparoscopy

So I had my lap done for my tubal pregnancy and a mass I’ve had on my left ovary for a little over a year now. I was supposed to start my period the 11th of this month and it still has not showed yet. Is this pretty normal? I’ve had back pain the last week. I was supposed to ovulate a week and a half after surgery, so I bd on what days were supposed to be my ovulation. I didn’t know for sure because I didn’t use opks though. Took a test day after period didn’t show and it was neg. What should I do??