Irregular period and TTC

Lynzee • Mommy to Ammarie, born on March 3,2016!
I've been TTC for about a month now, but my period is all out of whack. Lol. 
In April, I had two periods. The second one just ended yesterday. 
Glow said I'd automatically start ovulating like today.
But Glow also had my calendar set up for two periods every month. (I normally only have one). 
I took an ovulation test today, and it came back positive. Could the test be wrong? Why am I ovulating so soon after the end of my period?