I keep seeing first response tests that look just like the ones I had and I'm trying to decide whether to test again or not. My lines showed up within the three minute mark on the first two I took but they looked grey and then I took another one 4 days later and it was negative. But I keep seeing tests on here that have the same lines my first two tests did and they're positive. My nipples and boobs both have been super sore and sensitive for the past two weeks and I've been having muscle cramps in my legs and what feels like growing pains and I've been getting headaches every single day for about 5 days now and I rarely ever get headaches. I've also been extremely hungry and and everything smells good but eating anything makes me nauseous. I'm just so confused as to whats going on.