What could this be

Christina

For the past two months which is the longest we have started ttc I have fullness in uterus more at night I pee more very sore boobs every now and then nauseous feeling I have twinge feelings in abdomen and some pain sciatica pain last couple days I have taken tests all negative and I had a normal period in January anyone else experience this I was on mirena for five years been off for two months I am on cycle day 22