Please help me

I am 10 weeks pregnant i have 2 year old son i love him to death i would never do anything to hurt him promise...i never really got over the physical and mental abuse his father did to me and sometime when i look at my son i get upset because he looks like him and my son didnt ask to be here and im scared i need help im crying writing this because i know i am so wrong for this feeling and i havent talk to my husband about because he loves my son as if he is his own child ...i know I really need help... idk if my hormones please give me advice in the comments and please dont be rude

I swear i would never ever hurt him i love him so much