I got my first piercings before I started HRT... around 2 years ago now. Honestly, I kinda liked the sensation of getting pierced too much, so on my 1 year anniversary of being on HRT, I got a second set right above the first (both lobe piercings). I've gotten both done by Claire's at my local mall and I've had no problems :3
I'm planning on getting another set of piercings when I hit the 3 year anniversary on HRT, prolly at going to get them done at the top of my ears... and whenever I get my final surgery, I might go all out and get a tattoo to celebrate

The ironic thing is, I was previously terrified of needles... I got my first set with friends because I wanted to get over that, now I'm hooked