No more milk

So last night my 1yr old keeps trying to eat off me she was pulling and yanking at my shirt and when I fixed my shit and told her there's no more milk she threw her self back and started getting upset she hasn't eaten off me in about a month so there's not even enough milk for a drink I just feel so bad is there any way to get my milk back up I'm just wondering because this isn't the first time she's tried to eat off me I'm also pregnant will it affect my milk supply if I try