Hi. At The Beg Of Feb I Thought I Was

Hi.
At the beg of Feb I thought i was pregnant and since then have been charting my Ovulation. My periods have been a bit irregular due to stress but have settled down now. My last period was late but my Ovulation was around 10 days after so normal. But this morning I tested and I am Ovulating again. This is only 11 days after i was Ovulating. Am a bit worried as its impossible to chart if this is happening. Any advice would be so great.