I need advice

So I could possibly be pregnant (I need to do a blood pregnancy test as had a few different readings and on contraceptive so my gp wants me to get a blood one) however the guy who will be the dad has just completely ghosted me. What the hell should I do?! I want him to know and want him involved just don’t know how to tell him or anything or if he will want to be involved. (No horrible comments please)