I have panic disorder. it was pretty mild up until i had babies 6mths ago. it seems to be at a peak. is it normal to have a "relapse" ?

Yes, it is possible: It is possible to relapse. It is also possible that the hormonal changes that accompany pregnancy have caused an alteration in your mood. There are conditions of anxiety & depression that affect women after they give birth, called postpartum depression or psychosis. Your doctor can determine the appriopriate course of action & whether medications are appropriate. Wishing you'all the best.

Panic relapse: Yes, panic disorder or generalized anxiety disorder tend to be recurrent with relapses. Childbirth and caring for your baby can be stressful in many ways plus you go through many hormonal changes. It's not surprising that you have a relapse at this time. Taking antidepressants for at least 12 months continuously before tapering can be helpful. Please see your doctor, preferrably a psychiatrist.

Too much stress: Panic attacks are a sudden surge of anxiety to prepare the body to respond to real or imagined threats. Panic disorder symptoms can be controlled by psychotherapy or medication. The ability to control one's anxiety depends on: stress, use of substances like caffeine, challenging circumstances, sense of vulnerability, etc. In your case several of these factors caused your symtoms to reoccur.