Different doctors have different perspectives on lovenox.
My MFM put me on it, even with no blood clotting disorders that they found, because of the severe IUGR in my daughter's case and a placenta that did not look too good (lots of infarcts for gestational age). (I was also on low dose aspirin.) However, I met with a different MFM at a different hospital who saw my same medical info and said absolutely not. I could have went with either MFM, but I was more comfortable being on it. I was well appraised of the risks but thought it was worth it.
I also have 2 friends who have MTHFR- just one copy of mthfr I think, for both- but they both have a history of unexplained stillbirth after 32 weeks (one was 33 wks, one was 34 wks), and in both cases MTHFR was the *only* thing that showed up "abnormal" anywhere, including autopsies. (FYI, I met them both through our infant loss support group, I didn't know them before their losses, lest I sound like a freak who curses all my friends' pregnancies.) One friend was sent by her MFM to a hematologist, who recommended lovenox and low dose aspirin for pregnancies. The other friend just saw an MFM (which happens to be my mfm the one who put me on lovenox) and was only put on aspirin. Both of my friends' mfm's are even in the same practice. (And both my friends went on to have healthy babies and uneventful pregnancies even with the different treatments.)
So anyway, my point is, there are still very mixed thoughts on anticoagulants. Don't feel like you have to stop at the first MFM you meet with if you are not comfortable with their treatment plan, it is quite likely you may find someone else who would recommend it. (Sucks that they are so mixed b/c I feel like that puts a lot of pressure on us to chose the "right" doctor, all I can tell you is to talk it over, hear out their explanation on why or why not, and decide if you are comfortable with that.) Good luck!
Me (29) DH (30)
#1-Olivia Caetlyn-9-28-09-9-28-09, 23+2 wks, emergency classic c-section, class I HELLP, IUGR
#2- Lucas Oliver (rainbow baby)- April 2011, 36+2 wks, HELLP and pre-e free! (lovenox and LDA pregnancy)
#3-Matthew, late October 2012...mostly normal, 37 wks, (lovenox and LDA again)
My blog: http://www.butterflies-and-rainbows.blogspot.com/