Insane pregnancy sickness.. help

So this is my first viable pregnancy I lost my last one in February and I never had any symptoms with that one other than sore breast. But this one on the other hand I’m not even 6 weeks yet and my nausea is all day and just insane. It started a couple days ago and it was manageable but out of nowhere it got 1000x worse. I woke up around 3-4 am last night really needing to pee and got hit with a giant wave of nausea I ended up throwing up a couple times I did kinda feel better but not much. Woke up today and ate a granola bar and some soda crackers and drank a cup of water before leaving bed and that seemed to work so far. I’m just waiting for it to come back, no one in my house knows I’m pregnant but me and my boyfriend and we do want to keep it a secret for quite some time longer is there any way that I can keep my sickness down to a minimum??