New to this. Needing advice from mommies..So in February on the 9th I had a 11 day period which was…

New to this. Needing advice from mommies..So in February on the 9th I had a 11 day period which was unusual for me. Then I missed March and my next period was 21 days late which caused me to have a cycle of 56 days. Crazy I know. My cycles are usually 36 days every period I have! Then came April 6th I started bleeding I bled for 5 days when I always bleed my full 7 days! And ever since I have been having lower abd pain every day I thought I would have to use the bathroom but I don't and this pain is every single day. Then I decided to make a OB appointment which I had today! My nurse did a pap and took a culture but wanted a pregnancy test so she came back in and said (YOUR PREGNANT) were gonna get ultrasound set up for you today so me and my husband are all excited and when I get the ultrasound they didn't see nothing and said that I could of got pregnant to seconds ago ! The doctor was so funny so he wanted me to get blood work done today and check my hcg hormone levels then come back on Wednesday to get more blood work done to make sure it's increasing and not decreasing. Next here is the catch. Another nurse came in and said we have the same patient that came in earlier with my last name and she had a OB appointment to do they wanted another urine sample because it turns out this other patient has my last name as well and the first initial of the first name like mine and that's how they write it on cups for urine so they wanted to make sure they didn't mix the urine up but seriously why would they pay attention and do your job right the first time so they brought the pregnancy test in the room luckily I had to pee again. Sad to say it was negative they mixed our urine up. I'm so devastated but with the pain every day I still think I might be implanting in my stomach with this pain everyday and my husband and I have been sexual ever since my last period on the 6th of April everyday and now I have to go get a ultrasound of everything to make sure nothing is wrong. They want to test me for pelvic inflammatory disease but I know for a fact I don't have nothing or no infections because I went to the hospital two weeks ago with bad nausea and they drew my blood and my WBC count was normal and no sign of infections but I think I'm still pregnant with the pains I have everyday did any of you ladies find out you were pregnant right after a period? Is it implantation I'm experiencing for 17 days now with the pain?..Any suggestions mommies ??and I'm sorry it's so long.😓😓