I was taking Benedryl to get to sleep, but it produces strange dreams sometimes.
I have not read anything about why Lyme etc. mess with one's internal clock, but it sure seems to be the case.
Now that my treatment is taking effect, I am sleeping much much better, but sometimes get thrown off.
Did your dr okay the melatonin? If not, you might check with a pharmacist, they have been very helpful to me.
I wouldn't worry about getting addicted to anything at this point: your dr will cut you off at some point short of that, I'm guessing. The important thing is get restful, dreaming sleep so your body can heal. I am still catching up on lost sleep over the past few years. It makes a big difference.
Welcome to the forum. Sleep is a huge problem for me too. I take a sleep med myself. It helps but I still wake up. I have trouble falling asleep too. I'm not sure what the answer is.