Help ... !

So I believe I'm pregnant .. I'm waitin a few days to take get blood work done .. But my ex cheated on me and left me because he believed she was pregnant .. Turns out she's been lying to him and he came bck to me and is trying to get me back .. I know he loves me and he's sorry for what he's done but I'm scared to take him back I guess I should ask should I take him back opinions ? I really do love him and he means the world to me and I want him back but I'm not sure what I should do ..