What should I do?

For the last two months I have had a very consistent period, But before that my periods were all over the place. I'm now three days late on my period. But my SO and I are tired of getting our hopes up. He thinks it's just my period being all over the place again but idk. This past month was the first time we did the baby dance while I was ovulating. He thinks I should give it a few weeks and see what happens. Where as for me I'm scared of getting my hopes up again and I feel like the longer I wait the more get my hopes up. What should I do?