Lightheadedness at times.

Not sure this is the right place to post but I did not see a better one and I am also starting to look through some other posts about this. But thought I would ask this. So I have this health problem that I need advice with. I see my family Doctor again in April to talk about this again after my elimination diet but not sure if they have an idea or if he will try to get me to see a specialist. I am a male in late twenties. My problem is I just feel off in the head almost every day at this point (It little hard to explain but kind light headed/dizzy/brain fog and can just be a few minutes/hours a day or all day)

Also at times I get stronger, dizzy more so than above or to say more than what normally I get (This is how the lightheadedness started out as before the daily problems about a year ago with “dizzy spells”). This happens a lot when I'm talking with people and get “excited/worked up” in conversation (but not always, once in a while it just pops up on its own in normal conversations with family etc…) (Like if I get upset, excited over watching a football game, talking with friends, playing a board game, etc…) I then sometimes (does not happen every time I get “worked up” but feels like its getting worse) I than get a wave of lightheadedness, sometimes almost like I'm going to pass out but never have passed out and sometimes my face and or hands get tingly during the same time. When this “hits” me I must get away from people and try to “calm” down as it messes up my head/body and my anxiety goes up too (I don't think like a panic attack its just my anxiety goes up because of the crazy lightheadedness and I'm afraid something is wrong with me). This has been going on for over a year (I feel in the last year I've not had maybe one week that I could say I felt “good” and sometimes I'm hoping just for a whole “good” day) and I thinks it's getting harder now because of the anxiety I get when I go out with friends because I am scared I will get super lightheaded in public.

When I get a big wave coming over me of lightheadedness, if I leave the environment I am in when it happens it will get “better” but still have lingering "side effects" for 30+ mins sometimes.I think I eat pretty good, maybe not great but okay, and stay hydrated, don't drink/smoke, and keep a semi active life.

I also found out I have gastritis last year (March) but don't know the cause or if it has anything to do with this head problem. But the DR put me on dicyclomine for my stomach and after about a week (I will say I did have the stronger dizzy spells before being put on dicyclomine but not very often) After that week on the med I was super lightheaded a bunch on and off till I told my DR I had to get off of it because I was thinking it was making me dizzy so I got of the dicyclomine and I think it improved a bit over the next week or two but after that I feel the dizziness and lightheadedness has just stayed the same or slowly got worse. So not sure if the med had anything to do with it or just a different dizziness at the some time or what but thought I would put that in.
So my family DR had me do an elimination diet (eat chicken, fish, veggies, fruit, some nuts, etc…) to see if it helps with my gastritis and or head problems. I did that for a month to see if symptoms got better. Unfortunately this was not helpful it seems. If anything, my symptoms got worse for my stomach the first three weeks of the diet. and by the end I was the some in regards to my head problems.

I feel this is slowly getting worse over time at this point it's starting to affect my mood and work productivity some days. I'm just trying to find answers to why I get my heads all loppy and not sure if the family DR is going to be able to help me. But reading other people's posts on similar things has discouraged me as I am not sure there even is an answer. Sorry for the long details and hope it makes since. TIA