CHF and enlarged heart

Hello,
I am 33 years old and developed peripartum cardiomyopathy following my most recent pregnancy (4 months ago), which resulted in congestive heart failure. My cardiologist originally had me on labetalol, enalapril, lasix and a potassium supplement; one month after my incident he took me off of everything except the enalapril, which I was told was to prevent enlarged heart. I am currently taking 5mg/day of enalapril. I have recently begun to wonder if that is sufficient, since I've been having some breathing issues and occasional dizziness. To complicate matters, I also have asthma, which is being controlled with a daily maintenance inhaler (FloVent) and albuterol as needed.

I guess my question is this: Can enlarged heart recur after full recovery of peripartum cardiomyopathy? And can it occur w/o high blood pressure as a symptom? I have no previous heart issues and my blood pressure at last reading (about 1 week ago) was 116/69. Trying to decide if my symptoms warrant a doctor's visit.

Thank you, in advance!