this is not normal...it would be best if you can provide us with before surgery photos. Give it another 5 months and re assess the situation and speak to your surgeon about it.
Chest Wall Deformities
I do not have a lot of experience with augmentations after pectus repair although I have done numerous surgeries on patients with scoliosis with uneven chest walls. Your implants look somewhat close together in the midline and you are only 1 month post op so it is hard to predict exactly what will happen. It is possible and I have seen patients that had "tenting" when their implants were closer together. As the swelling resolves, it should get better but give it 2- months.
It is called symmastia
You have symmastia. This term is used to describe breasts that are connected to each other. It is not normal. However, many factors can cause it. Your pectus deformity might have predisposed you to it. Without a physical exam it is not possible to be totally accurate. Discuss it with your surgeon.
Results after Pectus Excavatum
This is a tough one to answer without seeing you in person both before and after. Implants in Precuts Excavatum patients almost want to fall to the middle because of the inward slant of the ribcage. In normal patients I want to get the implants as close as possible. In patients with PE, I actually release less muscle, trying to make them further apart so they don't touch. However no 2 PE cases are identical and your photos could be normal early after surgery depending on the degree of excavatum.