Fainting during iv and getting blood drawn

I’m pregnant but this has been happening even before I got pregnant. I keep fainting when I get my blood drawn or when I get an iv or even poking myself to do the sneak peak test I started to faint after losing some blood. Even if I look away and lay down and try not to think about it I still get woozy and everything goes black and I faint. Is there any other way to prevent it or do you think something’s actually wrong with me I’m not sure because when I get normal shots I’m perfectly fine. Does anyone have any ideas?