Unexplained weightloss

I made a post a few days ago about my weightloss. My baby is now 16 almost 17 months old. I’ve been breastfeeding since he’s been born .. back in January I seen my doctor about my weightloss I was pretty concerned he told me he wasn’t worried and it’s very normal with breastfeeding so I took his word for it and continued on as normal.. I returned to work in may and noticed I started losing weight again.. I just assumed it was from breastfeeding and just returning to work. I trust my doctor and didn’t think much of it. Fast forward to this past Sunday. It’s been a bit over a month since my sister seen me.. after she left my house she text me saying how worried she is about me. She’s extremely concerned about my weightloss and she said to her it looked like my eyes were bulging. That’s the first anyone has said that! I asked my boyfriend, mom and coworker they said they haven’t noticed anything with my eyes. She really really stressed me out about it so I made an appointment and went today and just brought up the weightloss again and he seems a bit more concerned this time.. he told me weightloss is normal to a point from breastfeeding like to my pre pregnancy weight but it shouldn’t go much beyond that. He’s sending me for a bunch of bloodwork and now I’m extremely stressed out and can’t stop crying. I’m absolutely terrified that I could have something serious going on like cancer. It will take 2-3 weeks to get results back and I’m absolutely freaking out. Has anyone has something like this happen?

My pre pregnancy weight was 155. I gain 58 lbs during pregnancy and now I weigh 130. I haven’t been this small since high school. I’m 35 years old and I’m absolutely freaked out.. I’m so scared of what’s going to come up in bloodwork . I’m so mad at myself because I thought it was normal and wasn’t concerned when maybe I should of been.