Dont know what to think?

3days ago i took a pg test...i missed my period..and have been having some sharp pains in my lower stomach, and havent been feeling so well....im thinking..okay these are just symptoms of my period..thats late but about to start..right now im about a week late, So today i took another pg test.. i made sure it was working, then walking away..in less than 10 min later, i returned to a kind of light but visible plus sign.. because it was close to 10 min, i'm thinking, could it have been a neg, and the other line that makes it a postive just be an evaporation line? I took a ept test..or should i say just like ept...it's either a plus or a minus...what u think?