I don’t know how to feel...

So, I was due in July of this year but I had PPROM back in January and gave birth to my sleeping son at 15 weeks. Well, I just found out I was pregnant again, I even got a blood test to make sure and I’m 5 weeks now. My boyfriend and I had sex earlier and now I’m having slight bleeding, not anything extremely heavy and I know women bleed after sex. But idk, I didn’t expect to get pregnant again so soon especially considering it took two years to get pregnant last time. I am excited but also not because I’m so scared of something going wrong. I want to be positive but I have such a crazy mixture of emotions. I just had to vent about it.