escorts!!!

I'm so heartbroken and lost, i went to me email account and my husbands was up (not the first time) I usually just close it out n log into mine well I seen an email that said hey love so of course I opened it! He was messenging a girl to meet up for a massage. Well i looked up her email and she is an escort . He asked for a 2 hour massage, her website said $900!!!! The day he asked she said she was busy but she could the next day. I'm not 100% sure if they actually met up . And of course he is denying it saying he was looking to get us a couples massage. This has happened b4 but not so in depth (I don't mind porn) I know it's just an arousel to him , contacting girls for pix and dirty talk and he would never act on it but this time I'm actual sick n so worried , I seen her pix she's beautiful big butt skinny waist big boobs n of course no stretch marks or signs of mother hood so it makes me feel worse . I thought my husband thought I was sexy and was content with me but I guess not.... idk what to do??? No I don't want to divorce him we have 3 children 1 on the way. I'm absolutely in love with him. We haven't been having much sex because this pregnancy has been rough so I keep trying to tell my self he just horny and being curious but I can't help but wonder if he really did pay for sex which fucking sux cause damn he would rather pay then sleep with his wife... should I contact the escort? What would u do??