Pregnant - Im Horny ALL THE TIME!?

I just found out that I'm pregnant. I'm about 5-6 weeks for so, and my first pregnancy. I'm and constantly and non-stop horny. I could just have sex in 5 minutes, I want it again. I did see that in the second trimester is the time it happens mostly. But, I'm not that far along. Did anyone have this happen to them too? Is it normal? I have a wonderful boyfriend that goes along with it, but I'm worried he will get sick of it, because I know I am.