1975 La Crosse

Hi! I am looking for my birth mom/dad/family. I was told that my bf was married (not to my bm) and i have 1/2 brothers/sisters. i am searching for anyone with information about any of of them. i was born in La Crosse on January 27, 1975. Other than the time i was born/and physician name signed on my birth certificate i don't have much information. i can be emailed at manitou@execpc.com.