Question about whether I should take this rollaid or not?

My girlfriend was sick, said it was the 24 hour stomache virus. She's the type to not take anything at all except for the midol and birth control (only pills she will EVER take) Anyways, I didn't get around her until she said she was feeling better. Now I got sick, took pepto, NEVER works, didn't work this time either. I threw up 3 times in the matter of 2 minutes. Then, a "false" throw up because I didn't have anything else in my stomache. She said that when she finally went to bed, she would wake up and there would be stomache acid on the sheets. I'm scared this will happen to me, and that THAT may not have been the last time I throw up. I looked at the rollaid directions, their are no ages to take it. Just says "keep out of reach of children". Now, I'm 15 years old, about 5 foot 9 and d165 pounds. Knowing that, do you think it would be safe for me to take the rollaid?