SO trying to get freaking while Im on the phone with my mom

After I came home from running some errands I  decided to go call my mom just to see how she was doing. While I'm on the phone my boyfriend decides he wants to start feeling on me and touching while making so light moaning noises (you know like it's about to down) all this while I'm on the phone with my mom. At first I just don't pay any attention but i noticed he just continues and gets more intense I tell him just give me 5 mins let me finish. Also forgot to mentioned that while running some errands we stopped to get a bit to eat and he had some drinks. Okay don't get me wrong but I'm sorry I felt a bit disgusted that he just continued while I was still on the phone which I expressed to him and started a big argument. Btw I kept my word after 5 mins I did tell my mom I'll call her back. Didn't matter this started a big fight like always. For me is sad to say that at almost 30 weeks I see my "relationship" vanish because we have no communication.