strange vibration in chest

Hi everyone. So I haven't been on here in a long time but I hope everyone is doing well. I've been having this issue lately and I'm starting to get nervous about it but I don't have a doctors appointment until Wednesday. So I feel the anxiety mounting.
32 year old female/health anxiety/low thyroid-Hashimoto/currently 18 weeks pregnant. The last 2 years I've had quite a bit of heart work-ups.. Lots of EKGs, blood tests, holter monitor, stress test. Only thing that really came back was PVCs. I feel when I have skipped beats, feels like a thud in my chest and usually I automatically cough.. Like to 'help' restart my heart. Anyways what I've been experiencing lately is different. It's mostly when laying down on my left side, but has also happened sitting and leaning on my left side..its like an alarming vibration. Sometimes it's more intense than others, but basically I feel like my heart just vibrates/quivers for a second and then it goes away. I'm a chronic pulse feeler, but for some reason I've never actually been feeling my pulse when this happens, so I don't really know if it's my heart for sure. I feel my pulse immediately after and it seems normal. Anyone know what this could be? I seem to be getting it more frequently now that I'm pregnant. Like I said it's only if I'm laying on my left side or my left side is pressed against something.

Odds are that S.C. is right on target.

But the opposite of skipped beats is too many beats which I have a mild case of. (it's much more rare than skipped beats)

The heart has a central processing unit that dictates when the heart beats... In my case - I have more than one and from time to time experience the weird sensation of too many beats.

I would guess that with all the tests you've had in the past that this isn't the case for you.

Send us pictures of the baby

Congratulationd 😊
I hope you soon get some let up from the problems that are causing you anxiety... So that you can relax up and enjoy your pregnancy xx