My sister watched me get pregnant [mff]

Not sure if anyone remember me but I share my husband with my sister. They fuck often. We fuck often. A lot of watch and lite joining. A bit ago she watched and touched herself to my husband fucking me. After he came inside me she sucked his cock clean. I’m fairly certain I got pregnant that time (husband rarely cum in me) I enjoyed the messages and questions last time so AMA.

I [F] watched my sister fuck my husband last night

It finally happened last night. They were unusually quiet so I snuck upstairs and peaked in to see my husband eating my sisters pussy. I was instantly dripping. He slid up and slowly inserted the head of his cock into her and gently began fucking her, the moans of my sister quickly began to fill the room. I was now standing in the open doorway of the room finger fucking myself as quickly as I could. My husband began to slow his thrusts down and he leaned forward and kissed her passionately. He pulled his cock out of her and rolled her onto all fours and began fucking her doggystyle, hard. He grabbed her hair and smacked his pelvis into her repeatedly. My sister and I made eye contact when they started in this position and surprisingly enough made me wetter. I cum all over myself watching them fuck. I know my husband knows I’m there but he hasn’t acknowledged it. My sister cums on his cock from behind and I cum again. I recognize the look on his face, he’s going to explode. I wonder if he’s going to cum in her again and wish he would. I’m now sitting in a recliner chair in the bedroom next to the bed. My sister is now on her back hanging off the side of the bed. Her feet are behind my husbands head as he keeps fucking her deep. I just know he’s going to cum in her pussy, but he doesn’t. My sister starts to cum again and once she finishes he abruptly pulls out and points his cock at her face, cumming all over her from her chin, covering her slightly bigger than mine tits and dripping into her belly button. They both let out a sigh. My husband looks me in the face and slightly smiles, I, now completely nude, walk up behind him and give him a deep kiss and then lean forward and lick some of the cum off of my sisters chest. She is still breathing hard and is speechless. I turn on the shower and my husband I get in, about two minutes later I hear my sister get up. I thought she was going to leave but much to our happy surprise she joined us in a very crowded shower. I washed both of them.