Husband still saw random girls pictures, is it normal? Opinion please..

So, I've been married for 6months with him after 4 years together. We are so happy. I also got pregnant right now it's been 25weeks. He was very happy for that.I always thought he loves me so much, until one day when I borrowed his phone, I found she saw random girls pictures from internet. Not too much but it really broke my heart since we didnt have sex as much before we got married. He always said he's afraid to hurt the baby, so we only had sex once a week maybe sometimes once every two weeks. I dont know if im overreacting or no, i just feel so sad when he didnt often touch me but he saw another girl pictures on social media. I talked to him. He only said that he was just looking nothing more. He didnt message her . He said that is normal for a man sometimes to look at another women (expecially nowadays with social media like facebook or instagram) but i still didnt want to understand. Right now everytime he touch his phone i always assumed he checked out random girls picture and imagine about her. I dont know if this is about my hormone that im overreacting or is it normal to dislike his behaviour.. Because from one side, I always love to have sex with him but he is too afraid to hurt the baby (im healthy pregnant with no issues by the way, but this is our first baby and he is too afraid) and from the other side why he still check out random girls picture if he said that he love me so much? Is it normal for men? please help me..  I cant sleep for few days overthinking about this.. I just miss the time when he adore me and love to had intimacy with me, and that happened before we find out i was pregnant. I dont want he still checked out for another girls, even only in internet. Is it too hard ?i really appreciate your opinion because this thing start to drive me crazy. Thank you girls