Advise please?

Rebecca • Mummy to Isabella Grace. Expecting baby number 2, 23rd March 2023 ❤️

Came off my pill 20th August. According to apps should of ovulated yesterday or day before. Had a positive OPK on Wednesday! Last 2 days been feeling nauseous and sore boobs and had spotting last weekend.

Could I already be pregnant? I don’t want to keep taking tests cause I hate when it’s negative!