I used kleenex moist toilet paper. Easily found in ntuc/cold storage. Can flush into the toilet bowl. I use a combination of dry and wet cos sometimes it gets messy. As you progress further in pregnancy can use also as we might have more discharge. U might need to insert the progesterone more into your v and walk more. When i was using progesterone i dont have much issues coming out.
Normal tissue paper is fine. But in my case, i usually do not wipe it (typically no mess for me) as i want to leave it for it to absorb the residue. If there is a lot of mess, you might have too much wastage though. Try to squeeze as much as you can inside your v.