So I've read a lot of manga and I'm in the process of getting together a list of others to read. I'm looking for any of the following: harder Smut (not hentai), pregnancy plots, prostitutes, hosts/hostess, red light district.
They don't have to be all in one manga and I would prefer it if the series was finished and completely scanned.

Thanks for any help you can give.

I'm sorry I'm not going to be helpful but the part thats confusing me and probably other people is the not hentai line.

Smut in my definition is basically 'hentai with a plot' especially when you are requiring pregnancy.

I mean the mom in tora dora was a hostess, but we all know how common moms are in anime, everyone is school age, with the occasionally 25 year old college setting, but its mostly 8th grade or high school.

try
Deep Love - Ayu no Monogatari
Deep Love - Reina no Unmei
in that order

it's not tagged as smut but contains what you are looking for

in need of romance?
uncommon, sad, sweet

I understand that it's a bit confusing. I'm looking for something you could find at a general website, mangahere, mangago, mangafox and so on but Hentai is usually a bit more graphic and would be somewhere more along the lines of perveden.

Thanks Lorska, I have read both of those, I loved them.