Hi Carmen
It sounds like all is going well with you so you have nothing to worry about....
I am also a 1st timer and also have an AP and I only felt v slight mvts - similar to what you describe (v soft, like tapping or pulse like in intensity) for ages... I was wondering if I would ever feel this one move!!! I didnt feel that til about 20 weeks or so... in the last few weeks the kicks are pretty strong and I now feel them all the time - esp when I am not v active (walking around, exercise etc rocks the baby to sleep), when I chg positions (e.g. if sleeping on one side and I turn over), when I have a v cold drink, or when DH or I poke the baby!!!!
DH did not feel mvts from the outside for a longtime, prob around 25-26 weeks...

It is v special when it happens... and us AP mummies just have to wait that bit longer!