Pregnant?

Back story....I am on birth control, taken regularly 95% of the time, basically I never miss a pill. If I forget to take, I take a bit later or double up the next day. Also have protected sex, no instances of condom breaking or falling off.

I am two weeks later for my ‘period’. My periods are irregular, meaning that some months I have two or I can go six weeks without a period. I have been under immense stress lately, which I know can affect your period. I took at pregnancy test at 7 days to a negative. At 14 days took another and got this after 20 mins. Does it look positive? Based on a pregnancy calculator and my last period I would be 7 weeks along if so. I have no symptoms at all. With my last two I had solid positive tests and symptoms at 5-6 weeks.