Nervous

So last night I had this sudden urge to cry for no apparently reason and i just got worried i checked glow and turns out I’m 5 days late. I bought a test just in case but figured i may just be off a few days 4 tests later and I’m pregnant i told the dad ( not my partner just casual) he wasn’t rude but he already has a son and really doesn’t think he can handle another which I understand and respect but now I’m 20 scared and pregnant. Any tips or advice?