I believe you have suffered a lot and really need a "space " for yourself. ask yourself, if you really still love your husband and want to have a completed family( since you have baby), give him a chance.
try to refresh your relationship with him, try to have more family gathering on weekend , or sometimes have time with your husband for dating( only you and him), to see if your relationship can be re-established. if he gives you any excuse that he cannot spare the times with you, you may know that he needs to see his girl. ...
but first of all, think postively.
to other moms- i think it is very difficult to judge their family issue, it may not be fair to conclude her husband loves her or not. because she has a baby, a separation is not good for a baby, and herself as well. don't push her to separate with her husband, let them try again and see. ( sorry if my opinion is different to you ).