Negative "Support" System

So far I've only told 4 people about my possible pregnancy. I took four tests two were positive and two were negative. So far three of those four people have told me not to get my hopes up since I miscarried before it's likely to happen again and I shouldn't bother getting excited yet. They're making me feel like I'm going to miscarry no matter what so I shouldn't even bother thinking I'm pregnant in the first place. Or to even bother going to the doctor yet.

Anyone else have a similar situation with people making them feel this way?