Hi Olivia, welcome to the board!
I am sorry you have been sick. Many people are bitten by ticks without knowing it. They are tiny and inject a numbing agent so you cannot feel them on you. Lyme disease can cause many symptoms. Below is a Lyme symptom list. You can have any combination of symptoms.
Unexplained fevers, sweats, chills, or flushing
Unexplained weight change--loss or gain
Fatigue, tiredness, poor stamina
Unexplained hair loss
Testicular pain/pelvic pain
Unexplained menstrual irregularity
Unexplained milk production: breast pain
Irritable bladder or bladder dysfunction
Sexual dysfunction or loss of libido
Change in bowel function-constipation, diarrhea
Chest pain or rib soreness
Shortness of breath, cough
Heart palpitations, pulse skips, heart block
Any history of a heart murmur or valve prolapse?
Joint pain or swelling
Stiffness of the joints, neck, or back
Muscle pain or cramps
Twitching of the face or other muscles
Neck creeks and cracks, neck stiffness, neck pain
Tingling, numbness, burning or stabbing sensations, shooting pains
Facial paralysis (Bell's Palsy)
Eyes/Vision: double, blurry, increased floaters, light sensitivity
Ears/Hearing: buzzing, ringing, ear pain, sound sensitivity
lncreased motion sickness, vertigo, poor balance
Confusion, difficulty in thinking
Difficulty with concentration, reading
Forgetfulness, poor short term memory
Disorientation: getting lost, going to wrong places
Difficulty with speech or writing
Mood swings, irritability, depression
Disturbed sleep-too much, too little, early awakening
Exaggerated symptoms or worse hangover from alcohol
When Lyme disease is a possibility, it is very important to see a knowledgeable doctor. Many doctors do not understand Lyme and treat with outdated protocols. Besides Lyme, ticks can transmit several co-infections including Babesiosis, Ehrlichiosis (HME & HGE), Bartonella, and Mycoplasma. Many people who have Lyme are co-infected, and it may affect treatment choice and progress. It is important to be tested for these by a Lyme reputable lab.
I know of two Lyme doctors in the UK: Dr. Wright in Bolton, who runs a private clinic the Complete Fatigue Clinic and Dr. Owen in Cardiff. I hope you can see a knowledgeable doctor soon and get some answers.
It is also important to learn as much as possible. I recommend reading
"Everything You Need To Know About Lyme Disease (2nd edition)" by Karen Vanderhoof-Forschner and Dr. Burrascano's treatment guidelines at http://www.ilads.org/burrascano_0905.html
He is one of the top Lyme doctors in the US, and many doctors follow his protocols.
Hang in there okay?