Coworker says my previous pregnancy and miscarriage wasn't real

Long post but I just have to vent! I had found out I was pregnant at the beginning of January. At around the end of January at 6 and a half weeks I had a miscarriage. It was an early miscarriage but in my eyes a miscarriage is a miscarriage and it was one of the worst pains I have ever felt in my life. Emotionally and physically. Well this coworker of mine had found out she was pregnant back at the beginning of December and she found out at 7 weeks that it was an ectopic pregnancy and had to have a D&C. I am now 10 weeks pregnant and my pregnancy is going great so far. I was out with some coworkers at lunch yesterday. One of them who isnt very fond of my other coworker told me that my coworker (who had the ectopic pregnancy) was going around saying she doesn't think I was every pregnant the first time or had a miscarriage . Two other coworkers backed up what she had to say too(She told them the same thing) . I am so hurt and disgusted by her. Here's a back story on this coworker as well. My husband used to be my manager and 4 years before we got together slept with her and his then girlfriend . It's in the past and what he did before is just in the past. He's with me now and that's all that matters. She can not forget about this night they had together tho . She has made it a point to tell EVERYONE at work which is okay because he told me about it  when we first started dating which I thought was very honest on his part. But there is no need to bring something up to everyone I work with like that over and over again . All she's done my entire pregnancy so far is check up on me and tell me how she wants to be there when I give birth (she always calls me drunk) and be at my baby shower . She is so 2 faced because not even a week ago she was saying how she thought my first pregnancy before this one was faked. I think one of the only reasons she wants to be involved is so she can see and be near my husband because I believe she still is stuck on that night they had together. My husband blocked her phone number when we first got together tho because she wouldn't quit calling and texting him wanting to have another night  together  I tried giving her a chance but I'm over it now . How would you girls handle this ? would you confront her ? I blocked her number . My hormones have me going crazy over here . I just can't believe she's accusing me of faking it .