Hey everyone
I'd first like to thank those who have been very helpful on this forum. There is some fantastic information here and friendly people!

Anyway, if you haven't read my original post that explains where I am at so please read that first if you have not

Anyway, I've been back about 5 weeks now and originally I was excited because it was helping. Small knocks/bumps were not worrying me and I was getting on with it so BJJ was helping me overcome anxiety.
HOWEVER, tonight I had a bit of a larger knock to the back of the head.
It wasn't that bad, however when I left the gym tonight I was a little wobbly walking out. This was a little concerning for me and I was starting to worry it was a sign of another concussion.

I was however a little dehydrated, hadn't eaten much before training and also nearly went unconscious from a choke as well as having quite a bit of adrenaline from sparing so that may have contributed.
Anyway, because I was walking a bit funny I popped into the doctors which I've done a few times over the past year when I have suspected a head injury. None of them ever have been tho.

However, tonight I got "diagnosed" with a "mild concussion."
I was told all the nuero tests were fine but that because I was walking funny and "that caused me to come in to see a doctor," they said it was a mild concussion.

But I was told that it was so minor and nothing like my previous concussions and that it is too early to tell if it is an issue and that if I feel fine tomorrow not to worry but if I don't get better come back.
Anyway, that has stressed me out hearing the words "diagnosed Mild concussion," as I now feel like I've received another concussion.
But after I got home, had a shower, drank some water, took some pain relief and anti nausea and ate dinner, I feel pretty much fine.
I'm now super stressed and ******. I'm now wondering if BJJ is worth it. I was so happy to return, and it was helping initially but now I'm thinking if it is even worth it.

Also, in regards to this "concussion diagnosis," I'm a bit concerned and questioning it. Usually when I get seen they can usually tell me, "yep you have one or "nope" you don't. I know that concussions cannot be diagnosed as 100% but all the times they have checked me in the last year (maybe 7 or 8 times), they have said no concussion, neck problems, you're fine. And then a day or 2 later I am sweet.

In this case I don't like how she has said "minor concussion," as to me, a concussion is bad regardless and if I have sustained a 3rd or potentially 4th one (depending on my motorcycle one), then that feels like quite a few to have had in the last 25 months.
I've honestly been pretty much fine tonight. Been 6 hours since and I've been watching TV, on my PC doing all my normal stuff etc and having pretty much no issues.

I guess my question is:
1. if I feel pretty much completely fine tomorrow (with only mild symptoms like I experience sometimes because of my neck etc), then can I rule this out as a concussion?
2. I'm tempted to go and see my actual GP and get a second opinion. Is that worth it ?
3. Should I consider maybe leaving BJJ? I feel like this is always going to be a constant worry. I'm just scared that this head stuff is going to control my life. Like, I'm scared to go snowboarding (used to go a few times a year) but haven't been since my concussion. I'm scared to ride roller coasters. I'm scared to do go karting etc. I feel like this is controlling my life and returning to bjj was meant to be my confidence booster and way to work through my anxiety.
4. Can someone elaborate on if a "mild concussion," is still as bad as a concussion.
5. Do I potentially sustain a sub concussive hit and not actually a concussion?