So, this doesn't sound like a pregnancy worry situation. First, you used a condom (awesome!). Then he didn't ejaculate. and third, it was early in your cycle. Around cycle day 9 to 10 is when pregnancy is more likely and for the next few days especially after that. However, yes, you have the potential to get pregnant at any time during a cycle so important to always use protection.
I don't think you are pregnant. That would be close to a miracle with these things in mind. I think at times under stress (pandemic) and changes in routine as this has, weight gain or loss, illness, etc. all can impact our period and we can be irregular. So, I would not worry and your period should be on the way very soon. Hang in there.