I really would strongly suggest this is something that rather than try and come up with fast decisions here, on the boards, or anywhere else, you really give yourself a few days, at least, to process and to start working through, using that workbook if needed.
You're at 7 weeks. Hopping to a decision you may (or may not) want to make at 20 weeks, if you even decide to remain pregnant, is shooting way far forward, and just not likely to be the best way to work through this. You're not at 20-week-choices. You're still only at this first choice, at choices you can make at or not much further than 7 weeks along. Get what I mean?
Why don't you go take some quiet time for yourself today to get started, and at least take a look at that workbook? Once you really take some time, and can at least come back here firm on your choice to remain pregnant or not, then we can help walk you through some next steps, and keep going forward -- but never too far ahead of where you're at, because that just doesn't tend to work with pregnancy and its choices -- from there.
Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it is the only thing that ever has. - Margaret Mead