no vaginal trichomoniasis can only be contract through the vagina during intercourse. oral sex will not give you vaginal trich but i caution you about one obvious fact. your boyfriend shared this std with you. you need to be very careful using condoms since the clearly contracted this unwanted gift from another person. who knows what other std this person may be carrying as a "bonus".
my boyfriend gave me trich but i am all cleared up now can i still contract it in my vagina if i swallow his semen?