Scared of the pressure I'll get days after giving birth.

Soo... a bit of background information. Me and my fiance have been together 2 and a half years and I am 7 months pregnant, fell pregnant at 17, now 18. He has recently just started his new job so is only getting 1 week of around the time our son is born.

I am in college, so if he is born on time I will be getting only 5 weeks off with him (💔😢💔😢). My OH'S mother was a nightmare to tell, her reaction was that bad it made me feel embarrassed about being pregnant and I began to consider abortion.

We live half with my parents (Friday-tuesday) and the rest of the week with his mother. She has decided to take 2 weeks off work and said "in the second week of me being off i will have your son for you a few days so you can go out" at 2 weeks, no! I am not getting much time with him myself never mind panning him off at 2 weeks😢

I want to stay with my parents for the few weeks before I go to college before we start staying at OH's while I recover and establish a bond and routine but I know the pressure will be on me to stay down OH's as soon as. Once the novelty has worn off my son she will be back to constantly going out drinking, like what she did when OH was younger, she never really mentions my pregnancy or asks how things are, all she likes to talk about is her girls holiday away.

She never done a lot with or for my fiance when he was younger as she preferred to go out and drink, she won't keep up this super nana act for long.

I just need advice as to how I can stay at my parents for the few weeks with my son, without any agro😣