What should I do?

I had sex this evening. Glow says I am the day after my OVU date. My fertile week is predicted as May 7-13. I know it’s just a predicted date. The condom had broke and I noticed it when we changed positions. He did not finish inside of me when we found out it broke. Although I understand you can be pregnant from precum. I feel like I shouldn’t be too worried. My only option would be plan b in the case I didn’t OVU yet? I took a plan b last month & it made my period a week later than it usually is. I rather not take the plan b but idk :/