strange marks on my skin?

So, I know rashes and lyme disease are common, but im wondering about these.... I've never gotten any rashes before so im kind of scared. I have a purplish rash ish mark on my left forearm. It looks like a bruise only its slightly raised. It doesn't itch or anything, and it doesn't hurt although it kind of looks like a burn or even a scar.

I keep thinking of Steven Johnson's syndrome ;-; which is probably really silly , but I read about it a few weeks ago and now its freaking me out a bit because it looks similar to the rashes in pictures, it doesn't itch. Ect. Also read that they typically show up on the front of legs and forearms first

Also last weekend, I got bitten by what I thought was a mosquito and the next day I had a dark spot that looked like a bruise over the bite. It was itchy. The bite looked like a mosquito bite and everything until the next day. Ill show a picture of that mark too. it is on the back of my calf, although now its nearly disappeared. That showed up before the spot on my forearm, and its why the spot on my forearm is concerning me so much.

Can someone here tell me if they've had similar rashes or experiences with mosquito bites, whether they think this is urgent, and that I shouldn't wait to see a doctor, or if I can wait a week before I look for an appointment.
My naturopathic doctor said she's seen reactions like this with other lyme patients when they get bitten by bugs, and that she's seen spots like the one on my arm but doesn't know what they are exactly.

Almost overnight I developed some weird lesions like those—on my shin, lower back/upper buttocks, under my breasts. Then they popped up on my ankle and inner thigh. They were circular/oval in shape with a somewhat irregular border and kind of raised and a teeny scaly but did not hurt or itch.

I had just started seeing my LLMD when I got these—went on several antivirals and antifungals for 4 months before I started AL-Complex for lyme. The lesions were fading but v-e-r-y slowly. Then I started A-Bab for Babesia and A-Bart for Bartonella and they are all gone now.

And yes—when I get a mosquito bite it looks like a bruise or a much larger rash. Not sure why.

The only explanation LLMD had was that "sometimes Bartonella causes weird markings."

I don't get many mosquito bites where I live now but most of the time now days when I do get the bites they welt up and act that way. Glad you're seeing the LLMD.

-p