I think 120bpm is a tad high for a resting heart rate, although, I'm not 100% sure, as it could be considered as normal at this stage of pg, as your heart is having to work a lot harder to pump a lot more blood around yours and bubba's bodies...

I think it sounds like something you should speak to your GP or midwife about though, just to be on the safe side.

And until then, just take it easy ok?