Hi. I Am A 25 Year Old Female. I Have

Hi. I am a 25 year old female. I have 2 children. Recently, I have had tenderness in my lower right abdomen and some and some discomfort in the middle of the top of my stomach. I have had a missed period which never happens. I took a pregnancy test and the first one came back positive and then 2 days later I took another and it came up negative. I was having sharp uncomfortable pains in my vagina two days ago but that went away and I am very bloated. Today I threw up 3 times and have been extremely nausous the entire day. If you have any advice that would be wonderful, thank you.