can i get trichomoniasis even though ive only had sex my my husband?

im 5 weeks pregnant. me and my husband are together 24 hours everyday mainly cuz we work together in all our jobs, most we're apart is one of us is showering so yeah I'm completely sure he isn't cheating. no worries there. but he has had no symptom's or anything, no discharge or itching. I get yeast infections often so I got itching and burning and used monistat 7, finished my last dose last night, my discharge is sometimes milky, (not thick) doesn't smell either. it's always clear, no weird discharge other than maybe once a day I see a small speck of green in my clear discharge, never the whole thing, just a speck once in awhile, any ideas?