Hey, on Monday I will be 3 weeks late for my period.
I keep getting negatives on pregnancy tests though.
I'm not stressed, I havent changed my diet, and I don't over exercise.

I've done about 3 hpt and all negative.

I have these symptoms.
-3 weeks late
-headaches before bed.
-crying at random times for nothing
-stomach rumbles and makes noises alot.
-back pain
-stomach aches
-gasy.
-when I go to do #2's there I can't (sorry tmi)
-moody

I don't have any sickness or anything.

could I be pregnant even with the neg tests?

please help me, I'm 16.

thank you.x