Muscle Tension & Twitching: Help Requested

Hello all I posted on an earlier response and haven't gotten a response in days, is anyone else here experienced what I have described below, would really help my health anxiety, thank you everyone in advance for the help!!!"Yeah but the muscle gets a really tight, tired feeling when I use the muscle and after use momentarily, and that is when my twitching will kick in, almost like it saying I can't keep using that muscle because it will begin to tighten up. However I can still move any which way I want to. I heard that CLINICAL WEAKNESS means you cannot move that muscle or it is extremely limited in movement? Is this correct??? Mine is in my quad and so when I extend my knee all the way or do some squating with just my bodyweight and stand up, or flex the leg muscle is when I will feel this tightening coming on, then the twitching kicks in once the muscle rests and it will last for maybe 5-10 seconds, but when I move the muscle again or I flex the muscle again, the twitching will go away. This is another question, if my twitching stops when I use that muscle where the twitching was at, that is indicative of BFS and not *** correct??? I am driving myself crazy and I got zero restful sleep last night as my leg was on my mind all night and I tossed and turned checking to see if I could still use the muscle, dont want to go to the neuro as I am afraid of the worst, ANYONE ELSE GET THIS TIGHTENING FEELING BEFORE THE ONSET OF THEIR LOCALIZED TWITCHING?? This is the second week into it, although it did go away last week from Wednesday-Sunday. Please help, my wife is extremely frustrated with me constantly thinking and checking stuff on the internet, I have two young children that are being ignored for the most part and I am 24 y/o, AHHHHH!!!"

Don't worry, I have the same in my left quad for already three months, first I get a tight feeling and then the fascics start (say 10 seconds. It also soemtimes hurts. 6 months ago I had the exact same thing in my right triceps. Never a dull moment with BFS. And I am 53

Wow that is great to hear Ron, so you get the tightening while using the muscle or just in rest?? I get this really tight feeling while using that muscle, more than normal and then the fasics will only last until I use the muscle again or maybe 5-10 seconds. It is driving me nuts but I am going to try to just relax and forget about it like I did last week, which it did go away for a couple of days. Thanks so much!!!!