I'm 31 years old with high bmi. This is my 3rd pregnancy with a gap of 11 years from my last. I'm 19 weeks pregnant and have lost 5lbs. Had really bad sickness to begin with and still being sick every other day but only once now. Haven't been measured by my mw since 9 weeks so not been discussed. I have to have extra scans fro. 28 weeks and possible blood thinners due to my 1st baby being 5.7lbs but he was 5 weeks early my 2nd was 7.5lbs at 5 days early. But never been offered blood thinners or nothing before??? What are peoples thoughts on blood thinners during pregnancy and wether me not gaining weight is a concern?