Rock band girls can have babies! But only one. If you quit the punk rock crap, move to a big house and try your best you can be a mother.
As you are kind of lazy-and-lame (otherwise you would not have been in a rock band in the first place) you will only have patience to raise one child. The second will not make it through the oral phase (eating moths between meals), so give it up.
Even if you two break up (while he is in coma after having his heart squeezed), get back together: he is the one who will save you.