Hormones/Symptoms after miscarriage!!!

How long can you still have symptoms of pregnancy after a miscarriage. I found out we were losing the baby a few weeks ago I was only bleeding for about 3 & a half days. And I confirmed miscarriage with dropping hcg levels. But I still have a lot of pregnancy symptoms and I am wondering when this will be over. Last night my SO and I were having sex and he went to suck on my nipples and it hurt like hell they were very sensitive and I’m also very tired all the time. I think it’s so unfair I have to still experience all of this but lost the baby it sucks!!! How long does this usually last?