You are in Baden? Hope you have a car.
this may help if you are new to the area. http://map.search.ch/
English speakers meet on mondays 9 - 11 am at Little Poppits on Landstrasse 51 in Ehrendingen
1st and 3rd Thursday mornings of the month in Brugg, Villa Suessbach, Corner of Fröhlicherstrasse and Süssbachweg, at 9.30am - 11.30am http://www.familienzentrum-brugg.ch/
Friday afternoons 3pm - 5pm in Baden, Karussell Mütter und Familienzentrum, next to the BIG church (St Sebastians) http://www.karussell-baden.ch/
You can of course always hang out with the locals on Monday Mornings- I am not sure if they still do it, but years ago (like, 4 years ago) they had a "krabbel-gruppe" (crawling-group) in the chappel on the other side of St Sebastians. 9.30 am to 11am I think. Many speak english..