Blood clots after my BBL?

For a month or so, I’ve had a little hard bump inside (not right under skin, you have to push in to feel it) but it’s tender, and a little smaller than a dime. I got a BBL a little over a year ago and had no complications. I’ve read up on fat necrosis and fibrosis and I would be OK with either one of those because they go away I don’t pose any serious harm, but I’m a little scared about blood clots. How long after a BBL can you develop a blood clot and could that be what it??