confused, please help.

xeu0

Feb 20th thru 23rd.. took 4 test all positive. than March 4th took one it said negative and I gave up. it's been 8 more weeks and I kinda feel like it could be. 2 dig..said positive clear blue on Feb 20th.. so I'm so confused. what you all think. periods when light, brown but then one day of blood.. real strong. just less than my usual 4 to 5 days.