Relationship with family - need advice

My husband and I've been together for 5 years and married for a little over a year now. We had our baby this year and both of our families live in another country. My mum couldn't come for long due to her health issues but she was here for the birth, and then MiL came to "help" me recover and look after the baby. That's where I feel like things have started going downhill, because MiL has a completely different personality from mine - I'm introverted and view home as a place where I can relax and just let my guards down. MiL, on the other hand, is very extroverted, loud, and likes to spend time together all the time, for example asking my husband when I was expressing in the master bedroom why I wasn't downstairs with her. She stayed for two months and i nearly had PPD because of her. While she was really helpful with cleaning, cooking and doing the laundry which I really appreciate, I don't think this invitiation has come from me but my husband and I'd have liked to build a bit of momentum as a family of three before anyone else was at home with us. Husband and i rarely have arguments but these two months it was tough because I was always upset at him since I didn't enjoy her presence nor felt comfortable enough confronting MiL, and i equally felt bad being so because she is his mum. I think it also added that she was quite possessive over my baby and always wanted to hold him, had an opinion on little things like how I should comfort him or put him to bed. She's now gone back but I fear that she is going to ask to come again to stay with us for that long or even potentially ask to move in with us (I may be spiralling but for context, she's living alone and LOVES her grandson, always asking me for videos and when I send them, complain how short they are (usually 30 sec videos)). I have told my husband that I just cannot ever let her in to our house again for more than 2 weeks and he's agreed, but I fear that he's going to cave in at some point because I know he feels bad for the single mom that she was/is. I do want to have another conversation with him about this soon. I guess I'm ranting but also looking for an advice how I should approach this with my husband because at the end of the day, I love him but I just didn't marry him to have MiL breathe down on my neck for photos of her grandson or potentially live with us.