How can I tell if my mole is benign or not?

I had a Thread Lift 3 days ago and Restylane injected into my upper cheeks 2 days ago. Now, there are huge swollen lumps under my eyes and I look super horrid. My eyes appear even smaller. Is this due to the Thread Lift, filler, or both? Should I have the filler dissolved and will that help? What advice can you give me regarding this?

I tan easily in the summer time. I'm Hispanic so I'm not sure if it has anything to do with either. I don't wax and I rarely wear makeup.

I am considering injectables/fillers for my face (e.g., under the eyes, nasolabial folds, and forehead). Which give a more natural appearance? I don't want to look fake or like I've had work done. What I really want to achieve is a more youthful appearance. I want to look like me, but my younger self.

I had a child a little over a year ago. While I've lost all but 8 lbs of the weight, my tummy area is still flabby. The muscles and the skin were stretched so much that they have not gone back to their pre-pregnancy state. I want a flatter tummy but don't want anything as invasive as a tummy tuck. What's a non-invasive alternative?