HI hun, I’m 7 weeks post op and have had this for last couple of weeks. I went to see the nurse about it as I was convinced I have a seroma / the implant has moved out of place. She assured me it hasn’t and that it’s probably just the implant starting to settle. It’s now settled down a little. I’d see the nurse in person if you haven’t already as she’d be able to feel the breast/implants on both sides x