Pregnancy symptoms but no positive test

Ok I need some opinions. I apologize for not being familiar with abbreviations. My husband and I decided a few weeks ago to have my IUD removed, since then we have been trying to get pregnant but have more of a if it happens it happens mentality. Not completely focused on it. But I have been having occasional nausea, dizziness, headaches daily, some food aversion and smells are bothering me more then before, also some bloating. I spotted for a few days last week but my big problem is not knowing when AF is supposed come. I had mirena and never had AF so it's been almost 4 years . Any advise would be appreciated. Not sure when I could test.