?? Help

Christine • Pregnancy is hard....
I got my period June 4-7 I ovulated on the 12 just now I'm spotting why?? My period should start July 4 but my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says the 25th how is that possible I just had a period this month??? Anyone please help!!!!