My OPK told me I was ovulating the day my period was ending! Is that right?

Lady

So I'm 40 and trying to conceive #2. This is the second time we are trying. The OPK said that I was LH surging at the end of my period. Could i ovulate the day or two after my period ends? Is that possible to ovulate that early? My periods are regular. And I ovulated or at least saw the LH surge last month too. But it was right when it was supposed to be... hmmm.... anyone ovulate at different times?