Forgot to mention in last q unprotected sex in oct, nov. Dec same guy HIV test came back negative got another test in march will it come back negative?

Uncertain. Do u know the guy's HIV status? Sometimes it takes at least 6 months for seroconversion to positive. Ascertain what the guy's HIV status is and use protection for safe sex from now on. Just because HIV is a treatable disease now is not a valid reason for having unprotected sex.