Gall bladder surgery

Has anyone gotten pregnant after they had gallbladder removal? I had mine done on Nov 21 2016. I had my period on the 26th of November. But I didn't get on 26th of Dec. I've been cramping all week. On the 27th after I pooped I wiped and In the vagina area I wiped light blood. This again happened on 29th after I pooped. Will it mess up my period? I only had sex with hubby 4 times on December. And it wasn't near my fertile week.. I think???