Very horny

So I'm 12 weeks pregnant and well lately I've been very horny. This morning I woke up after having a hot dream... Very hot to be exact.... And so I started playing with my self.... Well my SO walked into the room. He's never seen me masturbate before :( I kind of feel really bad. Almost ashamed. The only time I have masturbated is when he's not home for a long period of time like a month or longer :( but this time I did it when he was home :/ I would have just gone and had sex with him but it's kinda hard to do that when he's outside dealing with family.  :( I feel so embarrassed :(