I am 7 weeks pregnant. is taking pain killers not allowed? what type of pain medication can harm my baby?

Aspirin and Typenol: Acetaminophen is believed to be safe in pregnancy when used intermittently for short duration. It is routinely used for short-term pain relief and fever in all stages of pregnancy. During the first two trimesters of pregnancy, Aspirin may only be given during pregnancy when clearly needed for the short course & not in large doses. Do not use Aspirin during the last trimester of pregnancy.