It's not a problem, it just means that it's on the front wall of the uterus and not the back.... It may have delayed you feeling movements in the early days but is not a problem.... I have recently asked questions re this and c-section on the peer support and ask a midwife boards and even that is not an issue apparently! Nothing to worry about
I've got an anterior placenta this time and like Fluffs said, it made movements a little longer to feel and even now the kicks and punches are a little bit muted in comparrison to when I was pg with my DD, whose placenta was to the side.
Anterior placenta here too! MW has said I probably won't feel movements until approx 22 weeks and it also means a doppler is a waste of time as even registrar and MW struggled to hear junior's HB through the whooshy placenta noise!
I also have an anterior placenta, which meant that there was a slight delay in feeling movements in the earlier weeks, I was a bit disappointed at first as I thought I'd miss out but can now feel lots of kicking / moving around. The time to be concerned is if your anterior placenta is lying low, which yours isn't or they would have mentioned it to you / put it on your notes.