Mums in Barcelona

Hi, I have move to Barcelona couple of days ago and with my 2.5 year old son. I am a working mum, born in Poland and would like to meet any other mums with little ones around. We both, speak polish, english and french. Anyone interested in meeting for a coffe or a play in the park with kiddies please contact me.
Feeling a bit lost here.
Many thanks,
Izabela