I am pregnant with 2nd baby. Ten days after giving birth to my 1st baby I had a pulmonary embolism so had Clexane injections initially along with 6 months of warfarin tablets. I am scared of this happening again so this time I am wanting to have Clexane injections during the pregnancy to prevent. Does anyone know at what stage of pregnancy I am likely to start these injections? Thanks in advance for any advice