Sleep heart rate spike 192 bpm after starting antihistamine
I wear a smart watch to sleep and I got a 192 bpm reading last night. Normally I'd brush it off as a glitch but I just started Allegra+Pepcid regiment YESTERDAY for MCAS GI issues. It's a little *too* coincidental. I went back all the way to March and my highest spike was less than 120bpm. Anyone has similar things happening?
Physically I don't feel different this morning other than maybe I feel a lot better...? I normally sleep 1-9. I just woke up at 7 and feel perfectly awake, except for this hear rate spike scare. TIA!