Help... should probably ask my OB this question but thought I would throw it out there to see if anyone has gone/going through this...

Before my 3 miscarriages I used to be very active, 6-10km runs, personal training 4-5 times a week, cross trainer almost everyday for an hour... then I had my first miscarriage, was told to slow down on the exercise to cut out the running and drop to cross trainer only on the days I wasn't seeing my personal trainer... then I had another miscarriage... was told to stop completely.... only walking..... nothing that build my heart rate up etc... then had my third so have been to scared to do anything with this pregnancy....

So here I am today... I keep hearing how good Pilates and yoga are for you during pregnancy and can help with natural labour etc. (I used to do Pilates on the machines years ago) I went for my first long walk on the weekend and it felt great, lots of uphill stairs which probably wasn’t good but DH was there pushing me up to help take pressure off.... I have also booked in for pregnancy pilates and think I might do some pregnancy yoga later on to work on breathing techniques etc...

am I biting off more then I should.... ? Anyone else go through this?