Teenage girl problems

Hope this is the right group I’m struggling over here. I have a teenage daughter (13) who will be 14 in a month I have a ten year old and currently due any day with my third.

I feel overwhelmed I’ve always worked full time and studied along side. And can say I was a full time worker part time mom I feel awful.

Now I’m on maternity leave I have heaps of time and noticing how horrible my eldest is to her sister. Her attitude stinks.

So last night I took her phone from her had a skim over her messages without digging her boyfriend who is the same age is constantly sending her inappropriate messages asking if she’s playing with herself how he wants to have sex etc etc.

I’ve always been open with her told her what lads are like. Explained how you never take indecent pictures and send them. She assured me they hadn’t even kissed quite adamant why wouldn’t I believe her.

I look in her photos low and behold topless snaps. My husband has flipped out telling me to sort this before he does. I don’t know where to start. I feel pathetic as a mother I mean there is no manual on how to raise your kids you try your best and wing it I’m at a loss where to start.

To make things even weirder and worse her boyfriend mentioned his dad wants to screw her like 🤯 hello????? Pedo shit right there.

She messaged back saying wtf and her boyfriend put he didn’t say those words but would like to screw a blonde of her exact description.

One another note too

Over here in lockdown you can meet with one person to exercise I allowed her to meet her cousin. Turns out they met but also met there boyfriends. I’m so disappointed she knows with me being so heavily pregnant I’m high risk. I explained the consequences should I get Ill. I feel like I don’t know who my daughter is. 😔

Any advice on how to tackle will be welcomed.