Any advice?

Today I was sent home from work due to throwing up. I’ve been a bit sick the last few days, so I decided to check just to be sure. We’re expecting!!! However, I am hoping to get some advice!

Me and my boyfriend have gotten pregnant twice before, this being out third time. The last two, sadly did not make it to term, and I miscarried. I would like to prevent that as much as I can! So if there is any advice out there to help me through at least the first 3 months i’d appreciate it!