YeahYeah, its normal. I mean it shouldn't be jetting off, but it slides a little and needs to be corrected until you lift off a little.
Is your swashplate level at mid stick (the direction the swash plate is pointed in is the direction the heli will go). What kind of heli is it. I assume a micro since you are flying in your house.
The micro electrics are sometimes harder than bigger version because on the bigger version there is less room for error, everything fits perfectly into a slot or is screwed in and aligned perfectly. The smaller ones have a greater tendency to have slop in them. You also have to align some stuff yourself, and if you don't really know what your doing, sometimes you don't pic the optimum spot. Anyways, you can get through it, but you'll prob spend some money doing it.
It takes sort of a leap of faith to punch the throttle and make the transition from this shaky hoping around to a hover. Helicopters aren't very stable at low rpm and really close to the ground (ground effects). When you get the rpm's up a little, you have a lot more stable heli because of the increased rotational inertia. I have a hornet and it flys really bad until I crank the rpm up to at least 2200. This can be scary as a crash at higher rpm's will definitely cause more damage. I guess it takes experience to tell if your heli seems like its working correctly or not and to decide if you want to try to lift off, because if its not perfectly set up, you could be putting it in a position for serious damage.
What kind of radio, gyro, esc (assuming stock), motor esc (assuming stock), battery are you flying with.
There is a whole check list of stuff I really have to make sure is working on my hornet or else it flies like crap. Everything has to be perfect.
FMS is hardly a simulator. It can teach you orientation of flying, but it doesn't compare to real flying in terms of touchyness. In FMS you can push up and rise really high and then push down slowly (without ever touching cyclics) and you will not only land safely but will land in the same spot! Very unrealistic. You have to be constantly adding cyclic inputs to keep you heli stable. I suggest you get a more realistic sim.
I was in your play a short while ago and I wanted to take the cheapest route to success, but when you skimp in helis it just makes life more frustrating. Do it right and you are sure to become a heli fanatic, skimp and buy crappy stuff and your gonna find it very frustrating. I have CSM v.10 but if you can find V.9 used, it is very cheap is very very realistic. I am not an expert on other sims but I know Realflight is good (but expensive and requires a good computer) and there are some other new ones out.
Make it idiot-proof, and someone will make a better idiot