Good to see your mind's at rest about being in season. How far along is she? Far enough that you'd get a false negative and make yourself MORE paranoid??
She first covered on August 4th for a few days, for the first time after foaling but did not take. Her next proper cover was 22nd august - 27th in hand ans she was normal season very willing etc. After that she showed mild signs of season on September 17th, but was not happy to cover in hand, eventually let Banner and her loose to pasture and she let him cover her twice in a 20min period after trying to kill him a few times, but i dont honestly think he finished the job either time and she never seemed happy or willing and that was the only time she let him near her and i only let them together for about an hour before they were separated so that was the ONLY cover. She never came back in season..
I thought she may have been in last week, but she didn't show any interest in the stallions at the show.
SO in answer to your actual question, she could still test normally..but she could be due july, or august.
Ive felt a foal move, or im crazy. I know now that if in three weeks she shows signs of season ive wasted a few months thinking shes preg, but if she doesnt then that will also tell. Shes very much fat and pregnant looking, but could just be baby fat from last yer haha