Hi there,
Try contacting Titania Tasco
http://www.titania-tasco.com/
They have ante-natal classes and may have professionals who speak English there.
Also speak to Ama Terapies,
www.amaterapies.org the holistic centre as they have been running English speaking birth preparation classes and may be able to help.
There is also a Doula Inma Sarries on Tel. 626 656 735 who speaks fluent English.
I believe that the natural health centre Marenostrum Barcelona
http://www.marenostrumcsf.com/ could have an English speaking midwife able to give classes.
Hope this helps - To be honest they are few and far between!