I’m going crazy

It’s a pretty long story but I’m gonna make it short me and my husband broke up a couple months ago and I met a new guy I slept with him without a condom I was extremely drunk two days later I took Plan B and then I started bleeding very heavily for seven days and then I go back with my husband and we had sex and a couple weeks later found out that I’m pregnant. Was very paranoid so I told my husband I have slept with a different guy before him we went to go get a DNA test. When I was 10 weeks and it came back that my husband is the father but the DNA test was kind fishy it cost us about 800$ they send us a kit when I had to poke my finger and put in the blood and he had to swipe office teeth I mean gums and we got the results in about seven days so we were relieved and forgot about it then I went to go get a 4D ultrasound and he’s telling me that the baby doesn’t look like him because the baby has big lips he told me he will leave me if the baby is not his so now I’m 32 weeks pregnant and I am seriously going crazy I stayed up all night crying just the thought of him leaving me kills me I fucked up bad I feel like I’m have a panic attack i’m starting to have doubts myself now does Plan B even work I did bleed for seven days very very heavily