I don't know if I'm pregnant...

Hey everyone, it's my first time using this. I'm afraid I might be pregnant and I've been pregnant before, so I'm searching for similar symptoms (i.e. smells, tenderness, etc.). My period is irregular and it's been a month or 2 since my last. This has only happened once before and I'm super nervous. I've had an abortion before and I'm terrified of having to go through that a secind time. I have no clue if it's paranoia that is making me believe I'm experiencing some symptoms (like a faint smell), but I could use some advice and reassurance.