pregnancy test and opk help

hi I was wondering if anyone can help trying to conceive baby number 3. I started what I thought was a period on the 10th of July the bleeding was very strange for me it started off with brown blood then to pink on and off for two days then went back to brown it’s now day 4. I now have cm with streaks of blood though it I normal have a 7 day period. I did a pregnancy test which I thought I could see the faintest of a line I also did a opk test out of curiosity to see what it would come up like as I have never used them before and there was two line would there be two lines when you aren’t due to ovulate yet thanks for any reply’s.