With a TSH which is euthyroid (aka "normal") and symptoms which seem to be hyper you can't make any sensible decisions about your treatment at all. You simply don't have enough information.
You are right about not stopping your levo. I suspect that is very likely to make things much, much worse.
Reasons for hyper symptoms when you are actually hypo are :
1) Insufficient T4 and/or T3.
2) Low nutrients, particularly iron and B12, but there are other important ones too, e.g. vitamin D and folate.
3) Low or high cortisol. There is a lot of crossover in symptoms between low and high cortisol so it isn't possible to "guess" which one you might have. You would need to be tested.
I would suggest you get some private tests done if possible. I wrote the following yesterday, and it may be helpful to you too :
There are thyroid tests you can do privately which can be ordered off the internet without the interference of a doctor, nor do you need a doctor's permission.
The first test package linked above can be done as a microtainer test or a vacutainer test.
The second test package linked above can only be done as a vacutainer test.
Microtainer : Finger-prick test. Spring-loaded lancets are sent to you to allow you to prick your fingers. Little vials are sent for the blood to be dripped into.
Vacutainer : Blood sample required from the crook of the elbow. A nurse or phlebotomist will have to take blood for you. All the equipment required is sent to you.
Once you have your blood samples they must be packaged up and taken to the post office where you must post the package asking for "Guaranteed Next Day Delivery By 1pm". Since you want the blood to be processed as soon as possible for greatest accuracy, only do blood draws on Monday - Thursday and post the samples as soon as possible. The lab isn't open at the weekend.
Timing : Take blood samples early in the morning, by 9am at the absolute latest.
Fasting : Don't eat or drink (except plenty of water) overnight or on the day of the test until after the blood has been taken.
Taking thyroid meds : Before blood is taken, levo should be left off for 24 hours, any meds containing T3 should be left off for 12 hours.
Supplements : Avoid these for 24 hours. For iron supplements, some sites e.g. STTM suggest leaving these off for 5 days before testing.
Whatever you do with regard to timing, fasting, stopping meds and supplements, take note, and be consistent from then on - always do tests the same way.
Phlebotomy for vacutainer tests :
People make their own arrangements for this. They may know a friend or relative who will take blood for them.
Some GPs will allow patients to make appointments with the surgery phlebotomist, either for free or for a price, some won't allow it under any circumstances.
Some NHS hospital phlebotomy services will take blood for private testing, usually for a fee. The size of the fee varies dramatically. Phone up in advance and ask whether they will do it for you and how much it costs. Remember to take your tubes away with you. If you have a few hospitals near where you live, shop around for the best response.
There are private phlebotomists, who might come to your house. They are expensive.
Some private hospitals may take blood for you, for a fee. But some insist that it can only be done if you are seeing one of their doctors, which is what you want to avoid.
Getting your results : These are returned to you via email.