Has anyone ever had to inject blood thinners during pregnancy? My partner normally does it it for me with no issues when he does it it’s sometimes more stingy than other times & sometimes leaves a mark sometimes doesn’t but I’ve had to do it myself twice & the first time I left a huge bruise & second time tonight it started bleeding more than it ever has like a big drop of blood spurted out. I don’t know what I’m doing wrong I’ve asked at the hospital & they said you can’t really do it wrong but when nurses have done it there’s no pain, mark or bleeding. I squeeze my thigh, dart it straight in, inject, pull straight out then let go of my thigh. Don’t know where I’m going wrong.