Might be pregnant

Katie
Please help I might be pregnant with my ex's kid I have missed my period my last period was November 2nd 2017 and last week I had spotting but my period is super late I take dollar store tests and first response tests and everything says negative I had an ultrasound done going to get results on the 23rd of February I am on the IUD but it isn't in correctly hence my ultrasound I don't know if I saw a baby inside me when the ultrasound was taking place it was in December and I am now getting the results my IUD is still in me so I am going to get it removed if I am not pregnant I haven't had a blood test my doctor was suppose to get a pregnancy blood test done and never did one pee stick ones which always come up negative my fiancée and I if I am not pregnant are going to try for a baby we are both 19 years old and we are both ready to be parents please no judging I don't like when people judge me and my lifestyle or my fiancée. My fiancée is 514 pounds and is 6 foot 4 and I love him. But some syptoms of my "possible" pregnancy are 
• Weight Gain
• Cramps
• Bloating
• Constipation
• Fatigue 
• My Stomache is kind of hard
• My boobs are tender 
• Dark Areolas 
• Mood Swings
• Nausea
• Vomiting 
• Headache
• My Stomache Looks Round.
• My Back Hurts
• My Legs Are sore and ankles kid of swollen 
There are the syptoms I have right now