Hi Belle
Sorry to hear you had a blood clot previously. This is my first pregnancy but we have a gene in our family which makes us at risk of PEs (my brother had one many years ago) so as a result I also have to inject myself everyday with Tinzaparin. I think the hospital are being over cautious really but like you, I'd rather that than a clot!
Mine go in my thigh and at first my legs were one big bruise but have been taking them for a couple of months now so the bruising isn't so bad. I was a bit worried about the complications of taking the medication ie risk of haemorraging etc but my midwife has assured me the risk is minimal.
Best of luck with the pregnancy (and birth). Good to know there is someone else out there who will be a pin cushion for 9 months

xx