Hi winterdaze, Welcome to Healing Well forum. We are glad to have ya. I am sorry that you have gone through so much.
I can kinda of relate to you on the shortness of breath and pacemaker. I am 32 yrs old and had slow heart rate with extremely low blood pressure. In september I got my pacemaker and have still had bouts of SOB.
I would suggest making an appt with your cardiologist and letting them know. I had my pacer intergated 2 months after placement. Do you have an appointment to have this done? It just maybe that they need to adjust some of the settings (it may be paced to high for you). It took them about 3 times of adjusting to get it where I dont feel like I am going to fall on the floor within the first 2 minutes of standing, lol.
Please keep us posted of how you are doing.