Because I am also IBS and have anxiety, I will share my suggestions with you . . .
First, there are a lot of issues with IBS and anxiety and the physical symptoms that you have . . . I have also experienced these . . . 1. something may be triggering an anxiety event which in turn is triggering the IBS reaction . . . it could be even something seemingly inconsequential that has happened . . .only you would know --- so think about anything that might have happened that maybe made you anxious or upset, etc.; 2. IBS can be triggered by non-anxiety based events also --- did your child keep you up at night so you have not had a good night's sleep, etc.? Did you see something on television that may have upset you? etc. 3. your physical reaction may have nothing to do with IBS or anxiety but because you do not know the cause of the physical symptom, that is provoking both the IBS and anxiety - for example, the cramping, etc. may be from something you ate, may be from a new virus infection, may be the result of normal intestinal function --- for example, if I eat too quickly, I can trigger the symptoms that you have and it will often take up to 48 or so hours to get over it; 4. do you take any meds and if so could this be a side effect? 5. are you experiencing any stress related factors associated with having a baby --- sometimes new Moms get anxious about caring for a new baby and a 1 year old baby is still a new baby, etc. 6. it could be hormonal also.
The next thing to do is to figure out if your anxiety about your symptoms is now causing an intensification of the symptoms --- anxiety and health issues can be a vicious cycle that has to be broken . . . . ask yourself, if you are improving or not; are the symptoms more intense when you think about them; when you are distracted and not thinking about your issues, do you feel better, etc.
Right now, I would suggest that you ensure that you keep track of the "history" of your symptoms. If you eat or drink anything, what happens? For how long, etc.? If your symptoms do not resolve themselves within 24 hours, then check it out with a med professional . . . or if they symptoms intensify and escalate, then go as soon as you can to see a med professional . . . in the meantime, if you have meds for IBS, consider taking them to control the IBS; I am assuming that you are seeing a counselor for the GAD (if not, perhaps you need to see a counselor to help you with the GAD); if you practice any type of strategy for anxiety such as mindfulness, etc., then use those techniques; and, by the time you get this, your really good friend should be awake so text her again . . . . the only way I know to calm myself down is to talk myself through the fact that anxiety triggers physical symptoms and that anxiety is manageable . . . but having someone to help you through the process is so much better . . . please let us know how you are doing . . .take care, kc