Sorry if this is TMI. I lost my Libido

I am 15 weeks pregnant and my boyfriend last night said "I don't give him as much loving anymore" and I said "he doesn't exactly do much to make me in the mood and generally Ijust dont feel in the mood as much any more." He replied with "well every time I try you say ow or that doesn't feel right. Maybe i should just go to the bathroom and just give myself a private session" i replied " you can do that if you want to" we used to do bedroom stuff like once a day but now it has gone down to twice a week or once a week and i am happy with that but I feel bad now that he isn't satisfied and I just dunno how to get my libido back.