No Tuth didnt cause stomach pains directly. You wearing TUTH in that type of environment probably made her uncomfortable and nervous. Those feelings could have triggered stomach pain. It depends everyone reacts different to discomfort or unease. Some people break out in a sweat, some get angry, some get nauseous and others get stomach pain.
TUTH is best used in a social type environment. Dates, Clubs, parties picnics, concerts etc etc… It works best on those who are comfortable with their own sexuality and feelings of arousal as well as those who have a good comfort level with you. In an environment like school or work it can give the predator vibe and cause unease.
Your teacher on the other hand is older, more experienced and more at ease around men. She will react differently to the signature then younger girls. My guess it was the A314 that impressed the teacher though not the TUTH.
Go a week or two without using pheromones and observe how people act around you. This is something all users should do before using mones. It makes it easier to see behavior changes.