Is this likely to be just swelling?

I have had a breast implant revision surgery 5 weeks ago. My new implants are very close with no gap in the clevage and the skin between is raised from the sternum. I have phoned my surgeon who has indicated that is probably just swelling & give it 3-6 months, I am a bit unsure myself. Do you think this looks like just swelling & that it will resolve in the next 3-6 months. Starting to feel very concerned!