faint pos. lines

everything was goin good as to not thinking i was pregnant. I had missed my period with just brown spotting for a day or 2 ((kinda like clots)) and every other day after that i would take tests to see if i was pregnant. They've all been neg. except for 2. And thats been the last 2tests that i've taken. They first said neg and then came up with a 2nd clear line. I would save them and look at them in the morning and next thing i knew, both those tests had very faint pos. lines?? My breasts have been sore but there starting to stop and I'm not discharging. I really dont think im pregnant but if i've had 2 tests that have had faint pos lines could i be??
I've had mild cramps too but they've started to stop

its officially been a week and 3days since the spotting has stopped
idk what to think right now