Also my doctor saod they really arent too reliable on moving so much until the third trimester. But definitely go to ER if that would give u piece of mind.
Get a stethoscope! I wish I'd gotten one with my 1st son. U need to be far enough along to hear heartbeat & sometimes search for it a lil but it's given me a lot of peace of mind found one for 10 at walhgreens. Otherwise u can rent the radars they use at docs office but as far I know pretty expensive even just to rent
Lay down in a dark room, drink something cold or sweet, and just concentrate. See if you can count 10 movements in 2 hours. I am sure he is fine and just been resting up for some crazy aerobics later ;-)