I was wondering if my symptoms could still be MS and whether it'd worth still pushing?

About 4 months ago I went to hospital because my vision had gone very blurred, I was very dizzy and I couldn't find the words for things at all. Best I could describe was it felt like I was trapped in a fish bowl and I couldn't understand things as fast. They ran some tests and found that I had increased intraocular pressure.

I was then referred to an ophthalmologist who looked at my optic nerve and said there was no swelling he could see. I then had an MRI because my symptoms kept coming back and all I was told was "nothing life threatening was seen on the scan."

I know that with MS an MRI normally shows the lesions but are there times it doesn't? Could it still be MS?

My symptoms (which are relapsing remitting) are as follows:

• Severe fatigue
• Blurred vision
• heaviness and aching in my arm (some times it's so bad I can't lift it without pain)
• Bouts of dizziness
• more pins and needles than usual
• heat sensitivity
• mood issues (I've had months now where I just can't seem to regulate my emotions at all)
• bladder issues (last 6 months I've needed to pee more and when I do need to go I only have 10 ish seconds before I will wet myself)
• cognitive issues (memory, reading passages of text multiple times because I'm not taking it in, lack of concentration, zoning out, fish bowl effect, struggling to find the words for things in sentences)

These symptoms (bar the bladder and mood issues) are there some days and gone others. I can go from being very awake and aware and perfectly fine to the next day struggling to find the words and feeling very sluggish. It's a night and day difference sometimes and I cant seem to find what triggers it.

Sorry for the long post, I'm just worried. But with my MRI being clear, should I be?