Need help interpreting basal body temp. chart for conception/pregnancy.?

I am experiencing a very long cycle (41 days to date) which is very unusual. I am always 30 days like clockwork. I spent most of February with Bronchitis and a yeast infection from the antibiotics. My temps were all over the map. Thought I was having an annovulatory cycle due to being ill/stressed but then my temps spiked around day 34. It appears I ovulated late. So, should I just expect AF to arrive after the expected luteal phase of about 14 days as I normally would?? Also, I'm experiencing pregnancy-like symptoms but could they also be premenstrual symptoms? Two pregnancy tests were negative but Dr. suspected I was pregnant and ordered a bloodtest. Negative too. Not sure what I should be expecting now as I've never been this late before...ever. Previous pregnancy took over four weeks to register on a pregnancy test at home and at Dr. Not sure what to think now. Any thoughts?