4 miscarriages

I had a miscarriage at 5 weeks August 2015
A blighted ovum December 2015
Another blighted ovum May 2016
And just recently miscarried a VERY early pregnancy last week...
They want me to see a specialist; they have no rhyme or reason and I have no antibodies.  I'm not sure if I want to go see a specialist - I really don't want to do lovenox injections (I've seen lots of women with awful bruising from it) and I honestly don't know if I could do it.  I have no trouble concieveing but it's sustaining that's the tough spot (which is odd since we have a wonderful 7 year old).... I kinda want to keep trying without intervention (if it's meant to be it will be type of thing) issue is I am O- so I have to get the rhogam after every miscarriage.  
Looking for similar stories and such to help me out here.  Should I give up...?