Help! To early to tell?

Erika

So for about a week now I have been having all symptoms of pregnancy. Sore boobs, extremely tender nipples, random headaches, nauseated in the mornings and if I don’t eat often, thirsty always thirsty, and hungry, and feeling blotted. But I took 3 test and all of them stated Not Pregnant. Could it be to early to tell? I know I may be being extremely impatient but I just want to know. Please help me! This would be my very first pregnancy.