Hi Vitik,
Your list is familiar!!
I am 52 and first noticed peri symptoms in my mid 40s in the way of my periods coming earlier and also had spotting now and then between periods. Then about 2 or 3 years ago more symptoms popped up...and a lot of gastrointestinal ones : gassiness, diahhrea now and then. It was pretty much daily for a few months a couple years ago and with it a LOT of anxiety.
I got a book that was recommended on here and I am sure you have heard of it and perhaps have it : The Pause. It details each symptom. It helped me along with this board to see that I was not alone. All I had heard about before was "hot flashes". Well, you know, not everyone gets those...I really have not at all at least during the day. I did have bouts of night sweats 2 years ago. Do not seem to get those anymore. The palpitations I had in my mid 40s and still at times have fluttering before my period.
Anyway, at this point my list is the following but not every day..it varies and also sometimes I can have none at all and feel great, so it really is unpredictable :
sometimes the afternoon sleepiness
fluttering as you mentioned at times, not often
Irregular periods (got one last in Feb. So this is the longest I have gone without it. Last year went exactly 3 months without it but then got it back every 24 days or 25 days).
Fatigue at times, like a PMS type fatigue
Pms type feelings even though my period is not here
anxiety
harder to lose weight than before even with being good about exercising.
Joint pain at times
Bloating at times like I'd be before my period.
Hang in there..it IS a rollercoaster ride at times, but like Hopefully said, it will pass.
take care,
rmc